Crash in WebCore::LogicalSelectionOffsetCaches::LogicalSelectionOffsetCaches
https://bugs.webkit.org/show_bug.cgi?id=125970

Reviewed by Antti Koivisto.

Source/WebCore: 

The bug was caused by containingBlockForAbsolutePosition returning a non-RenderBlock render object.
Fixed the bug by obtaining its containg block.

Also changed the return type of containingBlockForFixedPosition, containingBlockForAbsolutePosition,
containingBlockForObjectInFlow from RenderElement to RenderBlock as all callers of these functions
had assumed the return value to be an instance of RenderBlock.

Test: svg/text/select-text-inside-non-static-position.html

* rendering/LogicalSelectionOffsetCaches.h:
(WebCore::containingBlockForFixedPosition):
(WebCore::containingBlockForAbsolutePosition):
(WebCore::containingBlockForObjectInFlow):
(WebCore::LogicalSelectionOffsetCaches::LogicalSelectionOffsetCaches):

LayoutTests: 

Added a regression test.

* svg/text/select-text-inside-non-static-position-expected.txt: Added.
* svg/text/select-text-inside-non-static-position.html: Added.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@160819 268f45cc-cd09-0410-ab3c-d52691b4dbfc
CSS: Fall back to cache-less cascade when encountering explicitly inherited value.
<https://webkit.org/b/125968>

When encountering an explicitly inherited value for a property that's not
"statically inherited", drop out of the matched properties cache path
immediately instead of waiting for some coincidence to trigger it later on.

Fixes 3 asserting table tests:

- fast/table/border-collapsing/cached-69296.html
- tables/mozilla/bugs/bug27038-3.html
- tables/mozilla_expected_failures/marvin/backgr_border-table-row-group.html

Reviewed by Antti Koivisto.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@160820 268f45cc-cd09-0410-ab3c-d52691b4dbfc
DelayedReleaseScope is in the wrong place
https://bugs.webkit.org/show_bug.cgi?id=125876

Reviewed by Geoffrey Garen.

The DelayedReleaseScope needs to be around the free list sweeping in MarkedAllocator::tryAllocateHelper.
This location gives us a good safe point between getting ready to allocate  (i.e. identifying a non-empty
free list) and doing the actual allocation (popping the free list).

* heap/MarkedAllocator.cpp:
(JSC::MarkedAllocator::tryAllocateHelper):
(JSC::MarkedAllocator::allocateSlowCase):
(JSC::MarkedAllocator::addBlock):
* runtime/JSCellInlines.h:
(JSC::allocateCell):


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@160822 268f45cc-cd09-0410-ab3c-d52691b4dbfc
[WinCairo] Unreviewed build fix after r160798.

* win/tools/vsprops/FeatureDefinesCairo.props:
Removed ENABLE_MEDIA_CONTROLS_SCRIPT definition for now.



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@160823 268f45cc-cd09-0410-ab3c-d52691b4dbfc
[MSE][Mac] Add AVSampleBufferRendererSynchronizer support.
https://bugs.webkit.org/show_bug.cgi?id=125954

Reviewed by NOBODY (OOPS!).

Instead of slaving all the various renderer's CMTimebases to one master timebase,
use AVSampleBufferRenderSynchronizer, which essentially does the same thing.

* platform/graphics/avfoundation/objc/MediaPlayerPrivateMediaSourceAVFObjC.h:
* platform/graphics/avfoundation/objc/MediaPlayerPrivateMediaSourceAVFObjC.mm:
(WebCore::CMTimebaseEffectiveRateChangedCallback): Added; call effectiveRateChanged().
(WebCore::MediaPlayerPrivateMediaSourceAVFObjC::MediaPlayerPrivateMediaSourceAVFObjC): Set up
    the synchronizer and all the observers.
(WebCore::MediaPlayerPrivateMediaSourceAVFObjC::~MediaPlayerPrivateMediaSourceAVFObjC): Tear down
    the same.
(WebCore::MediaPlayerPrivateMediaSourceAVFObjC::isAvailable): Require the
    AVSampleBufferRenderSynchronizer class.
(WebCore::MediaPlayerPrivateMediaSourceAVFObjC::playInternal): Convert Clock -> Synchronizer.
(WebCore::MediaPlayerPrivateMediaSourceAVFObjC::pauseInternal): Ditto.
(WebCore::MediaPlayerPrivateMediaSourceAVFObjC::paused): Ditto.
(WebCore::MediaPlayerPrivateMediaSourceAVFObjC::currentTimeDouble): Ditto.
(WebCore::MediaPlayerPrivateMediaSourceAVFObjC::seekInternal): Ditto.
(WebCore::MediaPlayerPrivateMediaSourceAVFObjC::setRateDouble): Ditto.
(WebCore::MediaPlayerPrivateMediaSourceAVFObjC::ensureLayer): Ditto.
(WebCore::MediaPlayerPrivateMediaSourceAVFObjC::destroyLayer): Ditto.
(WebCore::MediaPlayerPrivateMediaSourceAVFObjC::effectiveRateChanged): Ditto.
(WebCore::MediaPlayerPrivateMediaSourceAVFObjC::addDisplayLayer): Ditto.
(WebCore::MediaPlayerPrivateMediaSourceAVFObjC::removeDisplayLayer): Ditto.
(WebCore::MediaPlayerPrivateMediaSourceAVFObjC::addAudioRenderer): Ditto.
(WebCore::MediaPlayerPrivateMediaSourceAVFObjC::removeAudioRenderer): Ditto.

Drive-by fix; audio samples can't be subdivided, and video samples are
rarely combined, so remove the call to CMSampleBufferCallForEachSample:
* platform/graphics/avfoundation/objc/SourceBufferPrivateAVFObjC.mm:
(WebCore::SourceBufferPrivateAVFObjC::didProvideMediaDataForTrackID):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@160825 268f45cc-cd09-0410-ab3c-d52691b4dbfc
Rebaseline the test I added in r160819.

* svg/text/select-text-inside-non-static-position-expected.txt:


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@160826 268f45cc-cd09-0410-ab3c-d52691b4dbfc
Web Inspector: Fix description of parameters in Page.setGeolocationOverride
https://bugs.webkit.org/show_bug.cgi?id=125983

Reviewed by Joseph Pecoraro.

No new tests, no changes in behavior.

* inspector/protocol/Page.json:


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@160827 268f45cc-cd09-0410-ab3c-d52691b4dbfc
CascadedProperties should use a bitset to track property presence.
<https://webkit.org/b/125991>

Avoid zeroing out a bunch of memory in the CascadedProperties ctor
by using a bitset to track whether each property is present in the
cascaded set.

Reviewed by Antti Koivisto.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@160828 268f45cc-cd09-0410-ab3c-d52691b4dbfc
Two small refinements to matched properties cache.
<https://webkit.org/b/125992>

- Avoid computing the matched properties hash if we're banned from
  using the cache anyway.

- When adding a new entry to the cache, use move semantics to avoid
  creating a transient copy of all the data.

Reviewed by Antti Koivisto.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@160829 268f45cc-cd09-0410-ab3c-d52691b4dbfc
CascadedProperties: Deferred properties should have inline capacity.
<https://webkit.org/b/125994>

Give CascadedProperties::m_deferredProperties an inline capacity
of 8 to sidestep malloc churn (0.2% of HTML5-8266 profile.)

Reviewed by Antti Koivisto.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@160830 268f45cc-cd09-0410-ab3c-d52691b4dbfc
Delete RVCT related code parts.
https://bugs.webkit.org/show_bug.cgi?id=125626

Patch by Peter Szanka <h868064@stud.u-szeged.hu> on 2013-12-19
Reviewed by Csaba Osztrogonác.

* wtf/Compiler.h: follow-up fix for r160648, remove an unnecessary comment.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@160832 268f45cc-cd09-0410-ab3c-d52691b4dbfc
[CoordinatedGraphics] Regressions in WebView's contentScaleFactor/contentPosition
https://bugs.webkit.org/show_bug.cgi?id=125943

Patch by Nick Diego Yamane <nick.yamane@openbossa.org> on 2013-12-19
Reviewed by Noam Rosenthal.

When WebView::pageDidRequestScroll is called it is scaling position requested
to scroll before store it as contentPosition, that is not necessary since WebView
already stores the requested contentScaleFactor so it's able to do that internally
when needed, what simplifies the API and improves the readability of webview's code.
This patch reverts changes from https://bugs.webkit.org/show_bug.cgi?id=118548, which
was causing some regressions in contentScaleFactor/contentPosition related stuff.
Besides that WebView::pageDidRequestScroll calls viewClient callback with the wrong
position (different from the position stored in WebView).

* UIProcess/API/efl/EwkView.cpp:
(EwkView::scrollBy):
* UIProcess/CoordinatedGraphics/WebView.cpp:
(WebKit::WebView::transformToScene):
(WebKit::WebView::updateViewportSize):
(WebKit::WebView::pageDidRequestScroll):
* UIProcess/efl/PageViewportControllerClientEfl.cpp:
(WebKit::PageViewportControllerClientEfl::setViewportPosition):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@160833 268f45cc-cd09-0410-ab3c-d52691b4dbfc
WTF fails to compile with gcc 4.8.2 and -Werror=array-bounds
https://bugs.webkit.org/show_bug.cgi?id=125936

Reviewed by Anders Carlsson.

* wtf/dtoa/double-conversion.cc: Use a unsigned instead of int on buffer_pos type.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@160834 268f45cc-cd09-0410-ab3c-d52691b4dbfc
<rdar://problem/15696824> [CFNetwork] Loading stops at server redirects
https://bugs.webkit.org/show_bug.cgi?id=125984

Reviewed by Anders Carlsson.

* platform/network/cf/ResourceHandleCFNet.cpp:
(WebCore::ResourceHandle::willSendRequest): If the client uses async callbacks, call its
willSendRequestAsync callback instead if willSendRequest.



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@160836 268f45cc-cd09-0410-ab3c-d52691b4dbfc
Improve "bad parent" and "bad child list" assertions in line boxes
https://bugs.webkit.org/show_bug.cgi?id=125656

Reviewed by Sam Weinig.

* rendering/InlineBox.cpp:
(WebCore::InlineBox::root): Use parent() function with assertions rather than
using m_parent function, which skips the assertions.
* rendering/RenderText.cpp:
(WebCore::RenderText::removeAndDestroyTextBoxes): Call invalidateParentChildLists
if we are in the optimized document-destruction code path and destroying children
without removing them from their parents.
* rendering/RenderTextLineBoxes.cpp:
(WebCore::RenderTextLineBoxes::invalidateParentChildLists): Added.
* rendering/RenderTextLineBoxes.h: Added invalidateParentChildLists.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@160837 268f45cc-cd09-0410-ab3c-d52691b4dbfc
WTF, JavaScriptCore fails to build with trunk clang: operators new, new[],
delete, delete[] cannot be declared inline
https://bugs.webkit.org/show_bug.cgi?id=124186
<rdar://problem/15644039>

Reviewed by Geoffrey Garen and Anders Carlsson.

Following <http://llvm.org/viewvc/llvm-project?view=revision&revision=193044>
(http://llvm.org/bugs/show_bug.cgi?id=17591>), Clang emits warnings when
operator new, delete are inlined. Such definitions cannot be inline per
replacement.functions (17.6.4.6/3) of the C++ standard. For now,
disable these warnings instead of exporting these functions.

* wtf/FastMalloc.h:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@160838 268f45cc-cd09-0410-ab3c-d52691b4dbfc
Build fix for platforms which do not define -[AVSampleBufferAudioRenderer muted].
Rubber-stamped by Eric Carlson.

To work around platforms with broken AVSampleBufferAudioRenderer headers, just
declare only those functions we need, and update isAvalable to bail out early if
those methods are not present.

* platform/graphics/avfoundation/objc/MediaPlayerPrivateMediaSourceAVFObjC.mm:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@160839 268f45cc-cd09-0410-ab3c-d52691b4dbfc
platform/mac/editing/attributed-string tests all flakily assert
https://bugs.webkit.org/show_bug.cgi?id=123029

* platform/mac/TestExpectations: Marked as flakily asserting.



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@160840 268f45cc-cd09-0410-ab3c-d52691b4dbfc
[iOS] Upstream WebCore/loader changes
https://bugs.webkit.org/show_bug.cgi?id=125879

Reviewed by Darin Adler.

* WebCore.exp.in: Added symbols for MemoryCache::{addImageToCache, removeImageFromCache}().
* loader/DocumentLoader.cpp:
(WebCore::areAllLoadersPageCacheAcceptable): Added.
(WebCore::DocumentLoader::DocumentLoader): Initialize m_subresourceLoadersArePageCacheAcceptable.
(WebCore::DocumentLoader::stopLoading): Modified to conditionally call areAllLoadersPageCacheAcceptable().
(WebCore::DocumentLoader::handleSubstituteDataLoadSoon): Modified to query FrameLoader::loadsSynchronously()
whether to load substitute data immediately or to schedule a load.
(WebCore::DocumentLoader::responseReceived): Modified to create a content filer when the response protocol
is either HTTP or HTTPS, assuming content filtering is enabled.
(WebCore::DocumentLoader::dataReceived): Modified to call DocumentLoader::setContentFilterForBlockedLoad()
as appropriate.
(WebCore::DocumentLoader::clearMainResourceLoader): Added PLATFORM(IOS)-guarded code. Also added a
FIXME comment to remove the PLATFORM(IOS)-guard once we upstream the iOS changes to ResourceRequest.h.
(WebCore::DocumentLoader::setResponseMIMEType): Added; guard by PLATFORM(IOS). Also added FIXME comment.
(WebCore::DocumentLoader::startLoadingMainResource): Added PLATFORM(IOS)-guarded code. Also added a
FIXME comment to remove the PLATFORM(IOS)-guard once we upstream the iOS changes to ResourceRequest.h.
I also substituted static NeverDestroyed<> for DEFINE_STATIC_LOCAL.
(WebCore::DocumentLoader::setContentFilterForBlockedLoad): Added; guarded by USE(CONTENT_FILTERING).
(WebCore::DocumentLoader::handleContentFilterRequest): Added; guarded by USE(CONTENT_FILTERING) and PLATFORM(IOS).
Also added a FIXME comment to remove the PLATFORM(IOS) guard inside its function body once we upstream
file ContentFilterIOS.mm and implement ContentFilter::requestUnblockAndDispatchIfSuccessful() for Mac.
* loader/DocumentLoader.h:
(WebCore::DocumentLoader::setResponse): Added; guard by PLATFORM(IOS). Also added a FIXME comment as
this method seems to violate the encapsulation of DocumentLoader.
(WebCore::DocumentLoader::subresourceLoadersArePageCacheAcceptable): Added.
(WebCore::DocumentLoader::documentURL): Added; returns the URL of the document resulting from the DocumentLoader.
* loader/DocumentWriter.cpp:
(WebCore::DocumentWriter::createDocument): Added iOS-specific code to create a PDF document.
* loader/EmptyClients.cpp:
(WebCore::EmptyChromeClient::openDateTimeChooser): Opt out of compiling this code for iOS. Also substituted
nullptr for 0.
* loader/EmptyClients.h:
* loader/FrameLoader.cpp:
(WebCore::FrameLoader::FrameProgressTracker::~FrameProgressTracker):
(WebCore::FrameLoader::FrameLoader): Initialize m_loadsSynchronously.
(WebCore::FrameLoader::initForSynthesizedDocument): Added; guarded by PLATFORM(IOS). Also added FIXME comment.
(WebCore::FrameLoader::checkCompleted): Added iOS-specific code with FIXME comment.
(WebCore::FrameLoader::willLoadMediaElementURL): Added iOS-specific code.
(WebCore::FrameLoader::stopForUserCancel): Added iOS-specific code and FIXME comment.
(WebCore::FrameLoader::commitProvisionalLoad): Added iOS-specific code and FIXME comment.
(WebCore::FrameLoader::transitionToCommitted): Opt out of ENABLE(TOUCH_EVENTS) logic when building for iOS.
(WebCore::FrameLoader::didFirstLayout): Added iOS-specific code.
(WebCore::FrameLoader::connectionProperties): Added; guarded by PLATFORM(IOS).
(WebCore::createWindow): Added iOS-specific code and FIXME comment.
* loader/FrameLoader.h:
(WebCore::FrameLoader::setLoadsSynchronously): Added.
(WebCore::FrameLoader::loadsSynchronously): Added.
* loader/FrameLoaderClient.h:
* loader/HistoryController.cpp:
(WebCore::HistoryController::restoreScrollPositionAndViewState): Opt out of scroll position logic when building for iOS.
(WebCore::HistoryController::replaceCurrentItem): Added.
* loader/HistoryController.h:
* loader/PlaceholderDocument.h: Changed access control of constructor from private to protected and removed the FINAL
keyword from the class so that we can subclass PlaceholderDocument on iOS.
* loader/PolicyChecker.cpp:
(WebCore::PolicyChecker::checkNavigationPolicy): Added USE(QUICK_LOOK)- and USE(CONTENT_FILTERING)-guarded code.
* loader/ResourceBuffer.cpp:
(WebCore::ResourceBuffer::shouldUsePurgeableMemory): Added; guarded by PLATFORM(IOS).
* loader/ResourceBuffer.h:
* loader/ResourceLoadNotifier.cpp:
(WebCore::ResourceLoadNotifier::dispatchWillSendRequest): Added USE(QUICK_LOOK)-guarded code.
* loader/ResourceLoadScheduler.cpp:
(WebCore::ResourceLoadScheduler::scheduleSubresourceLoad): Added iOS-specific code.
(WebCore::ResourceLoadScheduler::scheduleLoad): Ditto.
(WebCore::ResourceLoadScheduler::remove): Added iOS-specific code with FIXME comment.
(WebCore::ResourceLoadScheduler::crossOriginRedirectReceived): Added null-check for variable oldHost. Also added
iOS-specific code.
(WebCore::ResourceLoadScheduler::servePendingRequests): Added iOS-specific code.
* loader/ResourceLoader.cpp:
(WebCore::ResourceLoader::init): Ditto.
(WebCore::ResourceLoader::willSendRequest): Ditto.
(WebCore::ResourceLoader::connectionProperties): Added; guarded by PLATFORM(IOS).
* loader/ResourceLoader.h:
(WebCore::ResourceLoader::startLoading): Added; guarded by PLATFORM(IOS).
(WebCore::ResourceLoader::iOSOriginalRequest): Added; iOS-specific.
* loader/SubframeLoader.cpp:
(WebCore::SubframeLoader::loadPlugin): Added iOS-specific code.
* loader/SubresourceLoader.cpp:
(WebCore::SubresourceLoader::create): Ditto.
(WebCore::SubresourceLoader::startLoading): Added; guarded by PLATFORM(IOS).
(WebCore::SubresourceLoader::didFinishLoading): Added iOS-specific code.
(WebCore::SubresourceLoader::willCancel): Ditto.
(WebCore::SubresourceLoader::notifyDone): Ditto.
(WebCore::SubresourceLoader::releaseResources): Ditto.
* loader/SubresourceLoader.h:
* loader/appcache/ApplicationCacheStorage.cpp:
(WebCore::ApplicationCacheStorage::loadCacheGroup): Added iOS-specific code.
(WebCore::ApplicationCacheStorage::loadManifestHostHashes): Ditto.
(WebCore::ApplicationCacheStorage::cacheGroupForURL): Ditto.
(WebCore::ApplicationCacheStorage::fallbackCacheGroupForURL): Ditto.
(WebCore::ApplicationCacheStorage::calculateQuotaForOrigin): Ditto.
(WebCore::ApplicationCacheStorage::calculateUsageForOrigin): Ditto.
(WebCore::ApplicationCacheStorage::calculateRemainingSizeForOriginExcludingCache): Ditto.
(WebCore::ApplicationCacheStorage::storeUpdatedQuotaForOrigin): Ditto.
(WebCore::ApplicationCacheStorage::executeSQLCommand): Ditto.
(WebCore::ApplicationCacheStorage::verifySchemaVersion): Ditto.
(WebCore::ApplicationCacheStorage::openDatabase): Ditto.
(WebCore::ApplicationCacheStorage::executeStatement): Ditto.
(WebCore::ApplicationCacheStorage::store): Ditto.
(WebCore::ApplicationCacheStorage::storeUpdatedType): Ditto.
(WebCore::ApplicationCacheStorage::ensureOriginRecord): Ditto.
(WebCore::ApplicationCacheStorage::loadCache): Ditto.
(WebCore::ApplicationCacheStorage::remove): Ditto.
(WebCore::ApplicationCacheStorage::empty): Ditto.
(WebCore::ApplicationCacheStorage::storeCopyOfCache): Ditto.
(WebCore::ApplicationCacheStorage::manifestURLs): Ditto.
(WebCore::ApplicationCacheStorage::cacheGroupSize): Ditto.
(WebCore::ApplicationCacheStorage::deleteCacheGroup): Ditto.
(WebCore::ApplicationCacheStorage::vacuumDatabaseFile): Ditto.
* loader/cache/CachedImage.cpp:
(WebCore::CachedImage::CachedImage): Added.
(WebCore::CachedImage::imageSizeForRenderer): Added iOS-specific code.
(WebCore::CachedImageManual::CachedImageManual): Added; guarded by USE(CF). Also added FIXME comment to incorporate
the functionality of this class into CachedImage and to remove the USE(CF)-guard once we make MemoryCache::addImageToCache()
platform-independent.
(WebCore::CachedImageManual::mustRevalidateDueToCacheHeaders): Added; guarded by USE(CF).
* loader/cache/CachedImage.h: Removed FINAL keyword from class so that we can define derived class CachedImageManual.
(WebCore::CachedImage::isManual): Added; guarded by USE(CF). Also added FIXME comment.
(WebCore::CachedImageManual::addFakeClient): Added; guarded by USE(CF).
(WebCore::CachedImageManual::removeFakeClient): Added; guarded by USE(CF).
* loader/cache/CachedResource.cpp:
(WebCore::CachedResource::load): Added iOS-specific code.
* loader/cache/CachedResource.h:
* loader/cache/CachedResourceLoader.cpp:
(WebCore::CachedResourceLoader::loadDone): Added argument shouldPerformPostLoadActions, defaults to true. Modified
to conditionally call performPostLoadActions() with respect to the argument shouldPerformPostLoadActions.
(WebCore::CachedResourceLoader::preload): Added iOS-specific code.
(WebCore::CachedResourceLoader::checkForPendingPreloads): Ditto.
* loader/cache/CachedResourceLoader.h:
* loader/cache/MemoryCache.cpp:
(WebCore::memoryCache):
(WebCore::MemoryCache::add): Added iOS-specific code.
(WebCore::MemoryCache::revalidationFailed): Ditto.
(WebCore::MemoryCache::resourceForRequest): Ditto.
(WebCore::MemoryCache::addImageToCache): Added; guarded by USE(CF). Also added FIXME comment.
(WebCore::MemoryCache::removeImageFromCache): Added; guarded by USE(CF). Also added FIXME comment.
(WebCore::MemoryCache::pruneLiveResources): Modified to take argument shouldDestroyDecodedDataForAllLiveResources.
(WebCore::MemoryCache::pruneLiveResourcesToSize): Modified to take argument shouldDestroyDecodedDataForAllLiveResources,
defaults to false. When this argument is true we destroy the decoded data for all live resources from the memory cache.
Such functionality is useful when the system is running low on memory.
(WebCore::MemoryCache::evict): Added iOS-specific code.
* loader/cache/MemoryCache.h:
* loader/cf/SubresourceLoaderCF.cpp:
(WebCore::SubresourceLoader::didReceiveDataArray): Actually make this code compile. In particular, there is no
method called sendDataToResource on SubresourceLoader or in its class hierarchy.
* loader/mac/DocumentLoaderMac.cpp:
(WebCore::DocumentLoader::schedule): This method has an empty implementation when building for iOS.
(WebCore::DocumentLoader::unschedule): Ditto.
* platform/graphics/BitmapImage.h: Exposed decodedSize() to access the decoded size of the bitmap image.
This functionality is used in MemoryCache::addImageToCache().

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@160841 268f45cc-cd09-0410-ab3c-d52691b4dbfc
[ATK] [WK2] platform/gtk/accessibility/roles-exposed.html is failing
https://bugs.webkit.org/show_bug.cgi?id=125854

Reviewed by Chris Fleizach.

Tools:

Ensure we don't ever create instances of AccessibilityUIElement
wrapping invalid platform-specific accessibility objects in DRT,
both for consistency with what WKTR does (so we avoid situations
where some tests fail in WK2 and not in WK1) and also to avoid
overlooking tests that might not be checking the right thing.

* DumpRenderTree/AccessibilityUIElement.cpp:
(AccessibilityUIElement::makeJSAccessibilityUIElement): Return a
nullPtr if the platformUIElement() is not a valid one.
* DumpRenderTree/AccessibilityUIElement.h:
(AccessibilityUIElement::platformUIElement): Added const modifier.

LayoutTests:

Updated tests and expectations to keep them passing after the
change done in DRT, without changing their actual purpose.

* platform/gtk/accessibility/roles-exposed.html: Make sure we
print "AXRole: (no element)" when accessibilityElementByID() does
not return a valid object, not to confuse it with cases where the
returned string for the role is an empty string.
* platform/gtk/accessibility/roles-exposed-expected.txt: Update
test expectations to reflect the "AXRole: (no element)" string
that is now being exposed. Also, replace the (wrongly added) PASS
expectations with FAIL for rowgroups, which are currently not
being exposed for ATK either.

* accessibility/deleting-iframe-destroys-axcache.html: Just
consider the first and third sons of the accessibility object for
the body (instead of the grandsons), so the test can run both in
Mac, where sons and grandsons are exposed, and ATK, where only
sons are exposed (no StaticText objects exposed there).

* accessibility/non-data-table-cell-title-ui-element.html: Use
accessibilityElementById() to get the accessibility object for the
"skip" table header instead of navigating with childAtIndex(),
since the hierarchy is not the same for Mac and ATK based ports.

* accessibility/loading-iframe-updates-axtree.html: Use the new
web area inside the iframe to compare against the old one, instead
of doing it the other way around, to avoid calling isEqual for an
undefined value (the old web area).
* accessibility/loading-iframe-updates-axtree-expected.txt:
Removed line comparing the old and new web areas inside the iframe.

* platform/mac/accessibility/search-predicate.html: Do not rely on
shouldBe() together with the string "AXRole: " when asking for the
role of objects that should no longer be in the accessibility
tree, and use shouldBeUndefined() instead.
* platform/mac/accessibility/search-when-element-starts-in-table.html: Ditto.

* platform/mac/accessibility/search-predicate-expected.txt: Update
expectations according to the usage of shouldBeUndefined().
* platform/mac/accessibility/search-when-element-starts-in-table-expected.txt: Ditto.

* platform/mac-wk2/TestExpectations: Add search-when-element-starts-in-table.html
here, since it does not return an undefined object in WebKit2 when
the search query should return no results (see bug 125996).

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@160842 268f45cc-cd09-0410-ab3c-d52691b4dbfc