DevTools: clear layers using transparent color

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

 /*
  * Copyright (C) 2013 Google 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 33 matching lines @@
 }
 
 void ReplayingCanvas::updateInRange()
 {
     if (m_abortDrawing)
         return;
     unsigned step = callCount() + 1;
     if (m_toStep && step > m_toStep)
         m_abortDrawing = true;
     if (step == m_fromStep)
-        this->SkCanvas::clear(SkColorSetARGB(255, 255, 255, 255)); // FIXME: fill with nine patch instead.
+        this->SkCanvas::clear(SK_ColorTRANSPARENT);
 }
 
 bool ReplayingCanvas::abort()
 {
     return m_abortDrawing;
 }
 
 SkCanvas::SaveLayerStrategy ReplayingCanvas::getSaveLayerStrategy(const SaveLayerRec& rec)
 {
     // We're about to create a layer and we have not cleared the device yet.
     // Let's clear now, so it has effect on all layers.
     if (callCount() <= m_fromStep)
-        this->SkCanvas::clear(SkColorSetARGB(255, 255, 255, 255)); // FIXME: fill with nine patch instead.
+        this->SkCanvas::clear(SK_ColorTRANSPARENT);
 
     return this->InterceptingCanvas<ReplayingCanvas>::getSaveLayerStrategy(rec);
 }
 
 void ReplayingCanvas::onDrawPicture(const SkPicture* picture, const SkMatrix* matrix, const SkPaint* paint)
 {
     this->unrollDrawPicture(picture, matrix, paint, this);
 }
 
 } // namespace blink