Merge MainResourceLoader into DocumentLoader
https://bugs.webkit.org/show_bug.cgi?id=104969

Reviewed by Adam Barth.

No new tests, refactor only.

* CMakeLists.txt:
* GNUmakefile.list.am:
* Target.pri:
* WebCore.exp.in:
* WebCore.gypi:
* WebCore.vcproj/WebCore.vcproj:
* WebCore.vcxproj/WebCore.vcxproj:
* WebCore.vcxproj/WebCore.vcxproj.filters:
* WebCore.xcodeproj/project.pbxproj:
* loader/DocumentLoader.cpp:
(WebCore::DocumentLoader::DocumentLoader):
(WebCore::DocumentLoader::mainResourceLoader):
(WebCore::DocumentLoader::~DocumentLoader): Move main resource clearing from
    ~MainResourceLoader.
(WebCore::DocumentLoader::mainResourceData):
(WebCore::DocumentLoader::stopLoading):
(WebCore::DocumentLoader::notifyFinished): Moved from MainResourceLoader::notifyFinished.
(WebCore):
(WebCore::DocumentLoader::finishedLoading):
(WebCore::DocumentLoader::handleSubstituteDataLoadNow):
(WebCore::DocumentLoader::redirectReceived):
(WebCore::DocumentLoader::continueAfterNavigationPolicy):
(WebCore::DocumentLoader::responseReceived):
(WebCore::DocumentLoader::continueAfterContentPolicy):
(WebCore::DocumentLoader::reportMemoryUsage):
(WebCore::DocumentLoader::dataReceived):
(WebCore::DocumentLoader::clearMainResourceLoader):
(WebCore::DocumentLoader::setDefersLoading):
(WebCore::DocumentLoader::setMainResourceDataBufferingPolicy):
(WebCore::DocumentLoader::addSubresourceLoader):
(WebCore::DocumentLoader::maybeLoadEmpty):
(WebCore::DocumentLoader::startLoadingMainResource): Don't keep separate checks
     for normal and empty loads, just use a single boolean.
* loader/DocumentLoader.h:
(WebCore::DocumentLoader::isLoadingMainResource):
* loader/MainResourceLoader.cpp: Removed.
* loader/MainResourceLoader.h: Removed.
* loader/mac/DocumentLoaderMac.cpp:
(WebCore::DocumentLoader::schedule):
(WebCore::DocumentLoader::unschedule):


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@146301 268f45cc-cd09-0410-ab3c-d52691b4dbfc