Support subpixel values for text-shadow and box-shadow

Source/core/css/resolver/StyleBuilderCustom.cpp

Index: Source/core/css/resolver/StyleBuilderCustom.cpp
diff --git a/Source/core/css/resolver/StyleBuilderCustom.cpp b/Source/core/css/resolver/StyleBuilderCustom.cpp
index a4e8a8485a6b414d6eaa16221cb798eb5368150e..41a6eaa42881bbc633beda1ae546cffec97b8a6f 100644
--- a/Source/core/css/resolver/StyleBuilderCustom.cpp
+++ b/Source/core/css/resolver/StyleBuilderCustom.cpp
@@ -926,10 +926,10 @@ PassRefPtr<ShadowList> StyleBuilderConverter::convertShadow(StyleResolverState&
     ShadowDataVector shadows;
     for (size_t i = 0; i < shadowCount; ++i) {
         const CSSShadowValue* item = toCSSShadowValue(valueList->item(i));
-        int x = item->x->computeLength<int>(state.style(), state.rootElementStyle(), zoom);
-        int y = item->y->computeLength<int>(state.style(), state.rootElementStyle(), zoom);
-        int blur = item->blur ? item->blur->computeLength<int>(state.style(), state.rootElementStyle(), zoom) : 0;
-        int spread = item->spread ? item->spread->computeLength<int>(state.style(), state.rootElementStyle(), zoom) : 0;
+        LayoutUnit x = item->x->computeLength<float>(state.style(), state.rootElementStyle(), zoom);
+        LayoutUnit y = item->y->computeLength<float>(state.style(), state.rootElementStyle(), zoom);
+        LayoutUnit blur = item->blur ? item->blur->computeLength<float>(state.style(), state.rootElementStyle(), zoom) : 0;
+        LayoutUnit spread = item->spread ? item->spread->computeLength<float>(state.style(), state.rootElementStyle(), zoom) : 0;
         ShadowStyle shadowStyle = item->style && item->style->getValueID() == CSSValueInset ? Inset : Normal;
         Color color;
         if (item->color)
@@ -939,7 +939,7 @@ PassRefPtr<ShadowList> StyleBuilderConverter::convertShadow(StyleResolverState&
 
         if (!color.isValid())
             color = Color::transparent;
-        shadows.append(ShadowData(IntPoint(x, y), blur, spread, shadowStyle, color));
+        shadows.append(ShadowData(LayoutPoint(x, y), blur, spread, shadowStyle, color));
     }
     return ShadowList::adopt(shadows);
 }