Add a FrameView lifecycle method that just updates layout, style and compositing.

Source/core/layout/LayoutView.cpp

Index: Source/core/layout/LayoutView.cpp
diff --git a/Source/core/layout/LayoutView.cpp b/Source/core/layout/LayoutView.cpp
index 74895d6bdecc84c0739b5f29141be9c3f8d09a0d..74b22d46d104394e88fbbd6d06349d3a383ee128 100644
--- a/Source/core/layout/LayoutView.cpp
+++ b/Source/core/layout/LayoutView.cpp
@@ -87,11 +87,11 @@ bool LayoutView::hitTest(HitTestResult& result)
     // into a child document, it could trigger a layout on the parent document, which can destroy DeprecatedPaintLayer
     // that are higher up in the call stack, leading to crashes.
     // Note that Document::updateLayout calls its parent's updateLayout.
-    frameView()->updateLayoutAndStyleForPainting();
-    return hitTestNoLayoutAndStyleUpdate(result);
+    frameView()->updateLifecycleToCompositingClean();

[chrishtr, 2015/07/01 21:44:58]

This is the only caller of the new updateLifecycleToCompositingClean method
right now.

+    return hitTestNoLifecycleUpdate(result);
 }
 
-bool LayoutView::hitTestNoLayoutAndStyleUpdate(HitTestResult& result)
+bool LayoutView::hitTestNoLifecycleUpdate(HitTestResult& result)
 {
     TRACE_EVENT_BEGIN0("blink,devtools.timeline", "HitTest");
     m_hitTestCount++;