Re-name Page::layoutMilestones() to Page::requestedLayoutMilestones()
https://bugs.webkit.org/show_bug.cgi?id=114713

Reviewed by Simon Fraser.

Source/WebCore: 

* page/FrameView.cpp:
(WebCore::FrameView::performPostLayoutTasks):
* page/Page.cpp:
(WebCore::Page::Page):
(WebCore::Page::addLayoutMilestones):
(WebCore::Page::removeLayoutMilestones):
(WebCore::Page::isCountingRelevantRepaintedObjects):
* page/Page.h:
(WebCore::Page::requestedLayoutMilestones):
(Page):
* rendering/RenderLayerCompositor.cpp:
(WebCore::RenderLayerCompositor::flushPendingLayerChanges):

Source/WebKit/mac: 

* WebView/WebView.mm:
(-[WebView _layoutMilestones]):



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@148590 268f45cc-cd09-0410-ab3c-d52691b4dbfc