Add GraphicsLayerDebugInfo::includesNewPaintInvalidation to distinguish paint from new RenderObjects

Source/core/rendering/RenderObject.cpp

Index: Source/core/rendering/RenderObject.cpp
diff --git a/Source/core/rendering/RenderObject.cpp b/Source/core/rendering/RenderObject.cpp
index 0186feb8cbcd223be39405970e32c2e8f87baa64..369516e3f6c791494f3d2b54589e68af3d84ca1a 100644
--- a/Source/core/rendering/RenderObject.cpp
+++ b/Source/core/rendering/RenderObject.cpp
@@ -1504,7 +1504,7 @@ LayoutRect RenderObject::computePaintInvalidationRect(const RenderLayerModelObje
     return clippedOverflowRectForPaintInvalidation(paintInvalidationContainer, paintInvalidationState);
 }
 
-void RenderObject::invalidatePaintUsingContainer(const RenderLayerModelObject* paintInvalidationContainer, const LayoutRect& r, InvalidationReason invalidationReason) const
+void RenderObject::invalidatePaintUsingContainer(const RenderLayerModelObject* paintInvalidationContainer, const LayoutRect& r, InvalidationReason invalidationReason)
 {
     if (r.isEmpty())
         return;
@@ -1518,6 +1518,10 @@ void RenderObject::invalidatePaintUsingContainer(const RenderLayerModelObject* p
         "object", this->debugName().ascii(),
         "info", jsonObjectForPaintInvalidationInfo(r, invalidationReasonToString(invalidationReason)));
 
+    if (view()->usesCompositing() && !hadPaintInvalidation())

[chrishtr, 2014/08/25 16:55:05]

Let's put this inside of
RenderLayerRepainter::setBackingNeedsPaintInvalidationInRect. The case of a view
issuing invalidations will end up in that method anyway (see
RenderView::invalidatePaintForRectangle).

[kouhei (in TOK), 2014/08/26 14:18:18]

Done.

+        paintInvalidationContainer->layer()->paintInvalidator().setBackingIncludesFirstPaintInvalidation();
+    setHadPaintInvalidation(true);
+
     // For querying RenderLayer::compositingState()
     DisableCompositingQueryAsserts disabler;
 
@@ -1541,7 +1545,7 @@ void RenderObject::invalidatePaintUsingContainer(const RenderLayerModelObject* p
     }
 }
 
-void RenderObject::invalidatePaintForWholeRenderer() const
+void RenderObject::invalidatePaintForWholeRenderer()
 {
     if (!isRooted())
         return;
@@ -1571,7 +1575,7 @@ LayoutRect RenderObject::boundsRectForPaintInvalidation(const RenderLayerModelOb
     return RenderLayer::computePaintInvalidationRect(this, paintInvalidationContainer->layer(), paintInvalidationState);
 }
 
-void RenderObject::invalidatePaintRectangle(const LayoutRect& r) const
+void RenderObject::invalidatePaintRectangle(const LayoutRect& r)
 {
     if (!isRooted())
         return;