Add GraphicsLayerDebugInfo::includesNewPaintInvalidation to distinguish paint from new RenderObjects

Source/core/rendering/RenderObject.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  *           (C) 2004 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2009 Google Inc. All rights reserved.
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 1654 matching lines @@
     InvalidationReason invalidationReason = getPaintInvalidationReason(paintInvalidationContainer, oldBounds, oldLocation, newBounds, newLocation);
 
     if (invalidationReason == InvalidationNone)
         return invalidationReason;
 
     if (invalidationReason == InvalidationIncremental) {
         incrementallyInvalidatePaint(paintInvalidationContainer, oldBounds, newBounds, newLocation);
         return invalidationReason;
     }
 
+    if (view()->usesCompositing() && !everHadPaintInvalidation())
+        paintInvalidationContainer.layer()->paintInvalidator().setBackingIncludesFirstPaintInvalidation();
+    setEverHadPaintInvalidation(true);

[chrishtr, 2014/08/20 17:10:31]

I think this should go in RenderObject::invalidatePaintUsingContainer()

[kouhei (in TOK), 2014/08/21 04:42:53]

Hmm. RenderObject::invalidatePaintUsingContainer() is const, and is being called
from const methods, so it will end up changing constness of many methods. I'm
not sure if we want to do that.

[chrishtr, 2014/08/21 21:28:34]

Well we need to make sure it's hit in all cases. So long as that holds then ok.

[kouhei (in TOK), 2014/08/25 01:57:58]

Done.

+
     fullyInvalidatePaint(paintInvalidationContainer, invalidationReason, oldBounds, newBounds);
     return invalidationReason;
 }
 
 InvalidationReason RenderObject::getPaintInvalidationReason(const RenderLayerModelObject& paintInvalidationContainer,
     const LayoutRect& oldBounds, const LayoutPoint& oldLocation, const LayoutRect& newBounds, const LayoutPoint& newLocation)
 {
     if (shouldDoFullPaintInvalidation())
         return InvalidationFull;
 
@@ skipping 1789 matching lines @@
 {
     if (object1) {
         const blink::RenderObject* root = object1;
         while (root->parent())
             root = root->parent();
         root->showRenderTreeAndMark(object1, "*", object2, "-", 0);
     }
 }
 
 #endif