Add GraphicsLayerDebugInfo::includesNewPaintInvalidation to distinguish paint from new RenderObjects

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 dce57f0b554e3092590f6e98709494d46c911c35..29c5379c89c5f94fd334cf81fd1a9ecc814c8c4c 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); }
@@ -1248,6 +1250,7 @@ private:
             , m_hasReflection(false)
             , m_hasCounterNodeMap(false)
             , m_everHadLayout(false)
+            , m_hadPaintInvalidation(false)
             , m_ancestorLineBoxDirty(false)
             , m_layoutDidGetCalled(false)
             , m_hasPendingResourceUpdate(false)
@@ -1293,6 +1296,7 @@ private:
 
         ADD_BOOLEAN_BITFIELD(hasCounterNodeMap, HasCounterNodeMap);
         ADD_BOOLEAN_BITFIELD(everHadLayout, EverHadLayout);
+        ADD_BOOLEAN_BITFIELD(hadPaintInvalidation, HadPaintInvalidation);

[abarth-chromium, 2014/09/02 19:30:16]

Maybe I'm misunderstanding this CL.  Are we spending a bit in RenderObject
purely for debug information?  Generally speaking, that's a poor tradeoff.  Bits
in RenderObject are very valuable.

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