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 59372a39a4468f9d0bd9084d0db2b58691b21dbc..192f1fb11bef77982ef3b900e7f38887694d50fe 100644
--- a/Source/core/css/resolver/StyleBuilderCustom.cpp
+++ b/Source/core/css/resolver/StyleBuilderCustom.cpp
@@ -1461,10 +1461,10 @@ void StyleBuilder::oldApplyProperty(CSSPropertyID id, StyleResolverState& state,
             if (!currValue->isShadowValue())
                 continue;
             ShadowValue* item = static_cast<ShadowValue*>(currValue);
-            int x = item->x->computeLength<int>(state.style(), state.rootElementStyle(), zoomFactor);
-            int y = item->y->computeLength<int>(state.style(), state.rootElementStyle(), zoomFactor);
-            int blur = item->blur ? item->blur->computeLength<int>(state.style(), state.rootElementStyle(), zoomFactor) : 0;
-            int spread = item->spread ? item->spread->computeLength<int>(state.style(), state.rootElementStyle(), zoomFactor) : 0;
+            LayoutUnit x = item->x->computeLength<float>(state.style(), state.rootElementStyle(), zoomFactor);
+            LayoutUnit y = item->y->computeLength<float>(state.style(), state.rootElementStyle(), zoomFactor);
+            LayoutUnit blur = item->blur ? item->blur->computeLength<float>(state.style(), state.rootElementStyle(), zoomFactor) : 0;
+            LayoutUnit spread = item->spread ? item->spread->computeLength<float>(state.style(), state.rootElementStyle(), zoomFactor) : 0;
             ShadowStyle shadowStyle = item->style && item->style->getValueID() == CSSValueInset ? Inset : Normal;
             StyleColor color;
             if (item->color)
@@ -1474,7 +1474,7 @@ void StyleBuilder::oldApplyProperty(CSSPropertyID id, StyleResolverState& state,
 
             if (!color.isValid())
                 color = Color::transparent;
-            OwnPtr<ShadowData> shadow = ShadowData::create(IntPoint(x, y), blur, spread, shadowStyle, color);
+            OwnPtr<ShadowData> shadow = ShadowData::create(LayoutPoint(x, y), blur, spread, shadowStyle, color);
             if (id == CSSPropertyTextShadow)
                 state.style()->setTextShadow(shadow.release(), i.index()); // add to the list if this is not the first entry
             else