Convert SkLayerDrawLooper::addLayerOnTop calls to use addLayer instead

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

 /*
  * Copyright (C) 2003, 2004, 2005, 2006, 2009 Apple Inc. All rights reserved.
  * 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:
  * 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
@@ skipping 196 matching lines @@
     if (!color.alpha()) {
         if (shadowMode == DrawShadowOnly) {
             // shadow only, but there is no shadow: use an empty draw looper to disable rendering of the source primitive
             setDrawLooper(drawLooperBuilder.release());
             return;
         }
         clearDrawLooper();
         return;
     }
 
-    drawLooperBuilder->addShadow(offset, blur, color, shadowTransformMode, shadowAlphaMode);
     if (shadowMode == DrawShadowAndForeground) {
         drawLooperBuilder->addUnmodifiedContent();
     }
+    drawLooperBuilder->addShadow(offset, blur, color, shadowTransformMode, shadowAlphaMode);
     setDrawLooper(drawLooperBuilder.release());
 }
 
 void GraphicsContext::setDrawLooper(PassOwnPtr<DrawLooperBuilder> drawLooperBuilder)
 {
     if (contextDisabled())
         return;
 
     mutableState()->setDrawLooper(drawLooperBuilder->detachDrawLooper());
 }
@@ skipping 1130 matching lines @@
     static const SkPMColor colors[] = {
         SkPreMultiplyARGB(0x60, 0xFF, 0x00, 0x00), // More transparent red
         SkPreMultiplyARGB(0x60, 0xC0, 0xC0, 0xC0)  // More transparent gray
     };
 
     return colors[index];
 }
 #endif
 
 } // namespace blink