Remove cullRect() from PaintOpBuffer.

third_party/WebKit/Source/platform/graphics/GraphicsLayer.cpp

 /*
  * Copyright (C) 2009 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 1189 matching lines @@
   return abs(c1 - c2) > 2;
 }
 
 static bool PixelsDiffer(SkColor p1, SkColor p2) {
   return PixelComponentsDiffer(SkColorGetA(p1), SkColorGetA(p2)) ||
          PixelComponentsDiffer(SkColorGetR(p1), SkColorGetR(p2)) ||
          PixelComponentsDiffer(SkColorGetG(p1), SkColorGetG(p2)) ||
          PixelComponentsDiffer(SkColorGetB(p1), SkColorGetB(p2));
 }
 
+// This method is used to graphically verify any under invalidation when
+// RuntimeEnabledFeatures::paintUnderInvalidationCheckingEnabled is being
+// used. It compares the last recording made by GraphicsLayer::Paint against
+// |new_record|, by rastering both into bitmaps. Any differences are colored
+// as dark red.
 void GraphicsLayer::CheckPaintUnderInvalidations(
     sk_sp<PaintRecord> new_record) {
   if (!DrawsContent())
     return;
 
   RasterInvalidationTracking* tracking =
       GetRasterInvalidationTrackingMap().Find(this);
   if (!tracking)
     return;
 
@@ skipping 56 matching lines @@
   }
 
   // Visualize under-invalidations by overlaying the new bitmap (containing red
   // pixels indicating under-invalidations, and transparent pixels otherwise)
   // onto the painting.
   PaintRecorder recorder;
   recorder.beginRecording(rect);
   recorder.getRecordingCanvas()->drawBitmap(new_bitmap, rect.X(), rect.Y());
   sk_sp<PaintRecord> record = recorder.finishRecordingAsPicture();
   GetPaintController().AppendDebugDrawingAfterCommit(
-      *this, record, OffsetFromLayoutObjectWithSubpixelAccumulation());
+      *this, record, rect, OffsetFromLayoutObjectWithSubpixelAccumulation());
 }
 
 }  // namespace blink
 
 #ifndef NDEBUG
 void showGraphicsLayerTree(const blink::GraphicsLayer* layer) {
   if (!layer) {
     LOG(INFO) << "Cannot showGraphicsLayerTree for (nil).";
     return;
   }
 
   String output = layer->LayerTreeAsText(blink::kLayerTreeIncludesDebugInfo);
   LOG(INFO) << output.Utf8().data();
 }
 #endif