Remove additionalOutlineSize in ShadowList: it is always 0.

Source/core/rendering/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 18 matching lines @@
  */
 
 #include "config.h"
 #include "core/rendering/style/ShadowList.h"
 
 #include "platform/geometry/FloatRect.h"
 #include "wtf/OwnPtr.h"
 
 namespace blink {
 
-static inline void calculateShadowExtent(const ShadowList* shadowList, float additionalOutlineSize, float& shadowLeft, float& shadowRight, float& shadowTop, float& shadowBottom)
+static inline void calculateShadowExtent(const ShadowList* shadowList, float& shadowLeft, float& shadowRight, float& shadowTop, float& shadowBottom)
 {
     ASSERT(shadowList);
     size_t shadowCount = shadowList->shadows().size();
     for (size_t i = 0; i < shadowCount; ++i) {
         const ShadowData& shadow = shadowList->shadows()[i];
         if (shadow.style() == Inset)
             continue;
-        float blurAndSpread = shadow.blur() + shadow.spread() + additionalOutlineSize;
+        float blurAndSpread = shadow.blur() + shadow.spread();
         shadowLeft = std::min(shadow.x() - blurAndSpread, shadowLeft);
         shadowRight = std::max(shadow.x() + blurAndSpread, shadowRight);
         shadowTop = std::min(shadow.y() - blurAndSpread, shadowTop);
         shadowBottom = std::max(shadow.y() + blurAndSpread, shadowBottom);
     }
 }
 
-void ShadowList::adjustRectForShadow(LayoutRect& rect, float additionalOutlineSize) const
+void ShadowList::adjustRectForShadow(LayoutRect& rect) const
 {
     FloatRect floatRect(rect);
     adjustRectForShadow(floatRect);
     rect = LayoutRect(floatRect);
 }
 
-void ShadowList::adjustRectForShadow(FloatRect& rect, float additionalOutlineSize) const
+void ShadowList::adjustRectForShadow(FloatRect& rect) const
 {
     float shadowLeft = 0;
     float shadowRight = 0;
     float shadowTop = 0;
     float shadowBottom = 0;
-    calculateShadowExtent(this, additionalOutlineSize, shadowLeft, shadowRight, shadowTop, shadowBottom);
+    calculateShadowExtent(this, shadowLeft, shadowRight, shadowTop, shadowBottom);
 
     rect.move(shadowLeft, shadowTop);
     rect.setWidth(rect.width() - shadowLeft + shadowRight);
     rect.setHeight(rect.height() - shadowTop + shadowBottom);
 }
 
 PassRefPtr<ShadowList> ShadowList::blend(const ShadowList* from, const ShadowList* to, double progress)
 {
     size_t fromLength = from ? from->shadows().size() : 0;
     size_t toLength = to ? to->shadows().size() : 0;
@@ skipping 27 matching lines @@
         float shadowX = isHorizontal ? shadow.x() : shadow.y();
         float shadowY = isHorizontal ? shadow.y() : -shadow.x();
         drawLooperBuilder->addShadow(FloatSize(shadowX, shadowY), shadow.blur(), shadow.color(),
             DrawLooperBuilder::ShadowRespectsTransforms, alphaMode);
     }
     drawLooperBuilder->addUnmodifiedContent();
     return drawLooperBuilder.release();
 }
 
 } // namespace blink