[iOS WebKit2] Swipe snapshots should be taken asynchronously
https://bugs.webkit.org/show_bug.cgi?id=132417
<rdar://problem/16535921>

Reviewed by Anders Carlsson.

Reorganize takeViewSnapshot to return a ViewSnaphot with the image
filled in (the other properties are filled in by ViewSnapshotStore).

Make ViewSnapshotStore use a fixed size instead of count for the snapshot cache.
iOS doesn't use purgeable snapshots, so make the cache much smaller there.

Use CARenderServerCaptureLayerWithTransform to achieve async snapshotting.

Rename WebKit::ViewSnapshotStore::Snapshot to WebKit::ViewSnapshot so that
it can be forward-declared in a bunch of places.

* UIProcess/API/Cocoa/WKWebView.mm:
(-[WKWebView _takeViewSnapshot:]):
Use CARenderServerCaptureLayerWithTransform.

* UIProcess/API/Cocoa/WKWebViewInternal.h:
* UIProcess/API/mac/WKView.mm:
(createIOSurfaceFromImage):
(-[WKView _takeViewSnapshot:]):
Adjust to the new push model.

* UIProcess/API/mac/WKViewInternal.h:
* UIProcess/PageClient.h:
* UIProcess/WebPageProxy.cpp:
(WebKit::WebPageProxy::takeViewSnapshot):
* UIProcess/WebPageProxy.h:
* UIProcess/ios/PageClientImplIOS.h:
* UIProcess/ios/PageClientImplIOS.mm:
(WebKit::PageClientImpl::takeViewSnapshot):
* UIProcess/mac/PageClientImpl.h:
* UIProcess/mac/PageClientImpl.mm:
(WebKit::PageClientImpl::takeViewSnapshot):
Plumbing.

* UIProcess/ios/ViewGestureControllerIOS.mm:
(WebKit::ViewGestureController::beginSwipeGesture):
(WebKit::ViewGestureController::endSwipeGesture):
Realize an object that can be used as the layer contents from the slot ID.

* UIProcess/ios/WebMemoryPressureHandlerIOS.cpp:
(WebKit::WebMemoryPressureHandler::sharedHandler):
(WebKit::WebMemoryPressureHandler::WebMemoryPressureHandler):
* UIProcess/WebMemoryPressureHandlerIOS.h:
Add a memory pressure handler for the UI process. This does not use
WebCore's platform independent memory pressure handler because that
mechanism only allows for one handler per process, and we don't want to
stomp on any handlers installed by WebKit1 in a process where the WebKits coexist.

* UIProcess/ios/WKContentView.h:
* UIProcess/ios/WKContentView.mm:
(-[WKContentView _takeViewSnapshot]): Deleted.
Get rid of an unnecessary bounce through WKContentView.

* UIProcess/mac/ViewGestureControllerMac.mm:
(WebKit::ViewGestureController::retrieveSnapshotForItem):
(WebKit::ViewGestureController::endSwipeGesture):
Use the new name, ViewSnapshot.

* UIProcess/mac/ViewSnapshotStore.h:
(WebKit::ViewSnapshot::ViewSnapshot):
* UIProcess/mac/ViewSnapshotStore.mm:
(WebKit::ViewSnapshotStore::ViewSnapshotStore):
(WebKit::ViewSnapshotStore::~ViewSnapshotStore):
(WebKit::ViewSnapshotStore::snapshottingContext):
Use a custom CAContext for snapshotting so that snapshots don't
disappear when the main context is destroyed on hibernation.

(WebKit::ViewSnapshotStore::removeSnapshotImage):
(WebKit::ViewSnapshotStore::pruneSnapshots):
(WebKit::ViewSnapshotStore::recordSnapshot):
(WebKit::ViewSnapshotStore::getSnapshot):
(WebKit::ViewSnapshotStore::discardSnapshots):
(WebKit::ViewSnapshot::clearImage):
(WebKit::ViewSnapshot::hasImage):
(WebKit::createIOSurfaceFromImage): Deleted.
(WebKit::ViewSnapshotStore::Snapshot::clearImage): Deleted.
(WebKit::ViewSnapshotStore::Snapshot::hasImage): Deleted.
Cache by image size instead of counts.

* WebKit2.xcodeproj/project.pbxproj:


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@168260 268f45cc-cd09-0410-ab3c-d52691b4dbfc
[CSS Regions] ASSERT when hovering over region
https://bugs.webkit.org/show_bug.cgi?id=128809

Reviewed by Mihnea Ovidenie.

Source/WebCore:
There's no point in hit-testing a box for a region if it's not contained inside
that region.

Test: fast/regions/hit-test-box-non-containing-region.html

* rendering/RenderBox.cpp:
(WebCore::RenderBox::nodeAtPoint):

LayoutTests:
Add a test verifying we're not trying to hit-test a box inside a region
where it's not contained.

* fast/regions/hit-test-box-non-containing-region-expected.txt: Added.
* fast/regions/hit-test-box-non-containing-region.html: Added.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@168263 268f45cc-cd09-0410-ab3c-d52691b4dbfc
[EFL][WK2] Refactor favicon database APIs
https://bugs.webkit.org/show_bug.cgi?id=132519

Reviewed by Gyuyoung Kim.

Source/WebKit2:
ewebkit2 has two options to get favicon.

The first option is ewk_view_favicon_get with "favicon,changed" signal.
It's simple to use but it always adds the callback to EwkView although applications does not use favicon.

The other option is ewk_favicon_database_icon_get with ewk_favicon_database_icon_change_callback_add API.
But the callback doesn't have information about Ewk_Favicon_Database to call ewk_favicon_database_icon_get.

This patch removed ewk_view_favicon_get and "favicon,changed" signal.
In addition, improved ewk_favicon_database_icon_change_callback.

* UIProcess/API/efl/EwkView.cpp: Remove ewk_favicon_database related code.
(EwkView::EwkView):
(EwkView::~EwkView):
(EwkView::informURLChange):
(EwkView::handleFaviconChanged):
(EwkView::createFavicon): Deleted.
* UIProcess/API/efl/EwkViewCallbacks.h:
* UIProcess/API/efl/ewk_favicon_database.cpp:
(EwkFaviconDatabase::iconDataReadyForPageURL):
(EwkFaviconDatabase::didChangeIconForPageURL): Deleted. dead code.
* UIProcess/API/efl/ewk_favicon_database.h:
Refactor Ewk_Favicon_Database_Icon_Change_Cb and improve doxygen.
* UIProcess/API/efl/ewk_favicon_database_private.h:
* UIProcess/API/efl/ewk_view.cpp:
(ewk_view_favicon_get): Deleted.
* UIProcess/API/efl/ewk_view.h:
* UIProcess/API/efl/tests/test_ewk2_favicon_database.cpp:
(EWK2FaviconDatabaseTest::requestFaviconData):
(TEST_F):

Tools:
* MiniBrowser/efl/main.c: Use ewk_favicon_database_icon_get instead of ewk_view_favicon_get.
(update_view_favicon):
(on_icon_changed_cb):
(window_free):
(on_url_changed):
(window_create):
(on_view_favicon_changed): Deleted.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@168265 268f45cc-cd09-0410-ab3c-d52691b4dbfc
Remove two now-incorrect assertions after r168256.

* runtime/JSString.cpp:
(JSC::JSRopeString::resolveRopeSlowCase8):
(JSC::JSRopeString::resolveRopeSlowCase):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@168267 268f45cc-cd09-0410-ab3c-d52691b4dbfc