Support subpixel values for text-shadow and box-shadow

Source/core/rendering/style/ShadowList.cpp

Index: Source/core/rendering/style/ShadowList.cpp
diff --git a/Source/core/rendering/style/ShadowList.cpp b/Source/core/rendering/style/ShadowList.cpp
index 675effec90bcd16241bfcfb6b90478343ebb3a90..a9a861dfa06e1d5f3d8181ac43a2dfe4c588961e 100644
--- a/Source/core/rendering/style/ShadowList.cpp
+++ b/Source/core/rendering/style/ShadowList.cpp
@@ -36,7 +36,7 @@
 
 namespace WebCore {
 
-static inline void calculateShadowExtent(const ShadowList* shadowList, int additionalOutlineSize, int& shadowLeft, int& shadowRight, int& shadowTop, int& shadowBottom)
+static inline void calculateShadowExtent(const ShadowList* shadowList, LayoutUnit additionalOutlineSize, LayoutUnit& shadowLeft, LayoutUnit& shadowRight, LayoutUnit& shadowTop, LayoutUnit& shadowBottom)
 {
     ASSERT(shadowList);
     size_t shadowCount = shadowList->shadows().size();
@@ -44,7 +44,7 @@ static inline void calculateShadowExtent(const ShadowList* shadowList, int addit
         const ShadowData& shadow = shadowList->shadows()[i];
         if (shadow.style() == Inset)
             continue;
-        int blurAndSpread = shadow.blur() + shadow.spread() + additionalOutlineSize;
+        LayoutUnit blurAndSpread = shadow.blur() + shadow.spread() + additionalOutlineSize;
         shadowLeft = std::min(shadow.x() - blurAndSpread, shadowLeft);
         shadowRight = std::max(shadow.x() + blurAndSpread, shadowRight);
         shadowTop = std::min(shadow.y() - blurAndSpread, shadowTop);
@@ -52,12 +52,12 @@ static inline void calculateShadowExtent(const ShadowList* shadowList, int addit
     }
 }
 
-void ShadowList::adjustRectForShadow(LayoutRect& rect, int additionalOutlineSize) const
+void ShadowList::adjustRectForShadow(LayoutRect& rect, LayoutUnit additionalOutlineSize) const
 {
-    int shadowLeft = 0;
-    int shadowRight = 0;
-    int shadowTop = 0;
-    int shadowBottom = 0;
+    LayoutUnit shadowLeft = 0;
+    LayoutUnit shadowRight = 0;
+    LayoutUnit shadowTop = 0;
+    LayoutUnit shadowBottom = 0;
     calculateShadowExtent(this, additionalOutlineSize, shadowLeft, shadowRight, shadowTop, shadowBottom);
 
     rect.move(shadowLeft, shadowTop);
@@ -65,12 +65,12 @@ void ShadowList::adjustRectForShadow(LayoutRect& rect, int additionalOutlineSize
     rect.setHeight(rect.height() - shadowTop + shadowBottom);
 }
 
-void ShadowList::adjustRectForShadow(FloatRect& rect, int additionalOutlineSize) const
+void ShadowList::adjustRectForShadow(FloatRect& rect, LayoutUnit additionalOutlineSize) const
 {
-    int shadowLeft = 0;
-    int shadowRight = 0;
-    int shadowTop = 0;
-    int shadowBottom = 0;
+    LayoutUnit shadowLeft = 0;
+    LayoutUnit shadowRight = 0;
+    LayoutUnit shadowTop = 0;
+    LayoutUnit shadowBottom = 0;
     calculateShadowExtent(this, additionalOutlineSize, shadowLeft, shadowRight, shadowTop, shadowBottom);
 
     rect.move(shadowLeft, shadowTop);
@@ -87,8 +87,8 @@ PassRefPtr<ShadowList> ShadowList::blend(const ShadowList* from, const ShadowLis
 
     ShadowDataVector shadows;
 
-    DEFINE_STATIC_LOCAL(ShadowData, defaultShadowData, (IntPoint(), 0, 0, Normal, Color::transparent));
-    DEFINE_STATIC_LOCAL(ShadowData, defaultInsetShadowData, (IntPoint(), 0, 0, Inset, Color::transparent));
+    DEFINE_STATIC_LOCAL(ShadowData, defaultShadowData, (LayoutPoint(), 0, 0, Normal, Color::transparent));
+    DEFINE_STATIC_LOCAL(ShadowData, defaultInsetShadowData, (LayoutPoint(), 0, 0, Inset, Color::transparent));
 
     size_t maxLength = std::max(fromLength, toLength);
     for (size_t i = 0; i < maxLength; ++i) {