Add |GraphicsLayerDebugInfo::getAnnotatedInvalidationRects|

Source/core/rendering/RenderObject.h

Index: Source/core/rendering/RenderObject.h
diff --git a/Source/core/rendering/RenderObject.h b/Source/core/rendering/RenderObject.h
index fa7acb36c9a4b8c37af855ba674132960aa02146..7476350a5438098b4cf6613fd9ddf2e965ccfe93 100644
--- a/Source/core/rendering/RenderObject.h
+++ b/Source/core/rendering/RenderObject.h
@@ -425,6 +425,8 @@ public:
     bool hasCounterNodeMap() const { return m_bitfields.hasCounterNodeMap(); }
     void setHasCounterNodeMap(bool hasCounterNodeMap) { m_bitfields.setHasCounterNodeMap(hasCounterNodeMap); }
     bool everHadLayout() const { return m_bitfields.everHadLayout(); }
+    void setHadPaintInvalidation() { m_bitfields.setHadPaintInvalidation(true); }
+    bool hadPaintInvalidation() const { return m_bitfields.hadPaintInvalidation(); }
 
     bool childrenInline() const { return m_bitfields.childrenInline(); }
     void setChildrenInline(bool b) { m_bitfields.setChildrenInline(b); }
@@ -1246,6 +1248,7 @@ private:
             , m_hasReflection(false)
             , m_hasCounterNodeMap(false)
             , m_everHadLayout(false)
+            , m_hadPaintInvalidation(false)
             , m_ancestorLineBoxDirty(false)
             , m_layoutDidGetCalled(false)
             , m_hasPendingResourceUpdate(false)
@@ -1291,6 +1294,7 @@ private:
 
         ADD_BOOLEAN_BITFIELD(hasCounterNodeMap, HasCounterNodeMap);
         ADD_BOOLEAN_BITFIELD(everHadLayout, EverHadLayout);
+        ADD_BOOLEAN_BITFIELD(hadPaintInvalidation, HadPaintInvalidation);

[abarth-chromium, 2014/09/02 19:34:58]

I don't think we should add bits to RenderObject to support debugging features. 
Bits in RenderObject are too valuable to use for that purpose.

[kouhei (in TOK), 2014/09/03 22:53:47]

Acknowledged. I'm thinking of keeping a HashSet for RenderObject that never got
painted iff the tracing is enabled.

         ADD_BOOLEAN_BITFIELD(ancestorLineBoxDirty, AncestorLineBoxDirty);
 
         ADD_BOOLEAN_BITFIELD(layoutDidGetCalled, LayoutDidGetCalled);