Use ShadowData in DropShadowFilterOperation

third_party/WebKit/Source/core/style/ShadowList.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 42 matching lines @@
                                          const ShadowList* to,
                                          double progress,
                                          const Color& currentColor) {
   size_t fromLength = from ? from->shadows().size() : 0;
   size_t toLength = to ? to->shadows().size() : 0;
   if (!fromLength && !toLength)
     return nullptr;
 
   ShadowDataVector shadows;
 
-  DEFINE_STATIC_LOCAL(
-      ShadowData, defaultShadowData,
-      (FloatPoint(), 0, 0, Normal, StyleColor(Color::transparent)));
+  DEFINE_STATIC_LOCAL(ShadowData, defaultShadowData,
+                      (ShadowData::neutralValue()));
   DEFINE_STATIC_LOCAL(
       ShadowData, defaultInsetShadowData,
       (FloatPoint(), 0, 0, Inset, StyleColor(Color::transparent)));
 
   size_t maxLength = std::max(fromLength, toLength);
   for (size_t i = 0; i < maxLength; ++i) {
     const ShadowData* fromShadow = i < fromLength ? &from->shadows()[i] : 0;
     const ShadowData* toShadow = i < toLength ? &to->shadows()[i] : 0;
     if (!fromShadow)
       fromShadow = toShadow->style() == Inset ? &defaultInsetShadowData
@@ skipping 19 matching lines @@
     drawLooperBuilder.addShadow(FloatSize(shadowX, shadowY), shadow.blur(),
                                 shadow.color().resolve(currentColor),
                                 DrawLooperBuilder::ShadowRespectsTransforms,
                                 alphaMode);
   }
   drawLooperBuilder.addUnmodifiedContent();
   return drawLooperBuilder.detachDrawLooper();
 }
 
 }  // namespace blink