Add GraphicsLayerDebugInfo::includesNewPaintInvalidation to distinguish paint from new RenderObjects

Source/core/frame/FrameView.cpp

Index: Source/core/frame/FrameView.cpp
diff --git a/Source/core/frame/FrameView.cpp b/Source/core/frame/FrameView.cpp
index 7028b4aa100b78baf06075cc193ac4d75513c153..5305606a60e04451d7112b3cab757002ed94a86a 100644
--- a/Source/core/frame/FrameView.cpp
+++ b/Source/core/frame/FrameView.cpp
@@ -969,6 +969,21 @@ void FrameView::layout(bool allowSubtree)
         frame().page()->chrome().client().layoutUpdated(m_frame.get());
 }
 
+void FrameView::resetFirstPaintInvalidationFlag(RenderObject* layoutRoot)
+{
+  /*
+    bool isTracing;
+    TRACE_EVENT_CATEGORY_GROUP_ENABLED(TRACE_DISABLED_BY_DEFAULT("blink.invalidation"), &isTracing);
+    if (!isTracing)

[kouhei (in TOK), 2014/08/21 11:20:39]

FIXME: I need to limit this to only when TRACE_EVENT_CATEGORY is enabled || HUD
from devtools is enabled.

+        return;
+  */
+    if (!layoutRoot->enclosingLayer()->hasCompositedLayerMapping())
+        return;
+
+    if (GraphicsLayer* graphicsLayer = layoutRoot->enclosingLayer()->compositedLayerMapping()->mainGraphicsLayer())
+        graphicsLayer->resetIncludesFirstPaintInvalidationRecursive();
+}
+
 // The plan is to move to compositor-queried paint invalidation, in which case this
 // method would setNeedsRedraw on the GraphicsLayers with invalidations and
 // let the compositor pick which to actually draw.
@@ -982,6 +997,7 @@ void FrameView::invalidateTreeIfNeeded()
 
     PaintInvalidationState rootPaintInvalidationState(*rootForPaintInvalidation);
 
+    resetFirstPaintInvalidationFlag(rootForPaintInvalidation);
     rootForPaintInvalidation->invalidateTreeIfNeeded(rootPaintInvalidationState);
 
     // Invalidate the paint of the frameviews scrollbars if needed