Oilpan: move 2D Canvas and WebGL objects to the heap.

Source/bindings/core/v8/custom/V8CanvasRenderingContext2DCustom.cpp

Index: Source/bindings/core/v8/custom/V8CanvasRenderingContext2DCustom.cpp
diff --git a/Source/bindings/core/v8/custom/V8CanvasRenderingContext2DCustom.cpp b/Source/bindings/core/v8/custom/V8CanvasRenderingContext2DCustom.cpp
index c338a538b44f450faff8c52e6616e8f7c248d037..ce32f15a2f215e1fe77e41d0a22898fd6bedaa8a 100644
--- a/Source/bindings/core/v8/custom/V8CanvasRenderingContext2DCustom.cpp
+++ b/Source/bindings/core/v8/custom/V8CanvasRenderingContext2DCustom.cpp
@@ -57,9 +57,9 @@ static v8::Handle<v8::Value> toV8Object(CanvasStyle* style, v8::Handle<v8::Objec
     return v8String(isolate, style->color());
 }
 
-static PassRefPtr<CanvasStyle> toCanvasStyle(v8::Handle<v8::Value> value, v8::Isolate* isolate)
+static PassRefPtrWillBeRawPtr<CanvasStyle> toCanvasStyle(v8::Handle<v8::Value> value, v8::Isolate* isolate)
 {
-    RefPtr<CanvasStyle> canvasStyle = CanvasStyle::createFromGradient(V8CanvasGradient::toNativeWithTypeCheck(isolate, value));
+    RefPtrWillBeRawPtr<CanvasStyle> canvasStyle = CanvasStyle::createFromGradient(V8CanvasGradient::toNativeWithTypeCheck(isolate, value));
     if (canvasStyle)
         return canvasStyle;
     return CanvasStyle::createFromPattern(V8CanvasPattern::toNativeWithTypeCheck(isolate, value));
@@ -74,7 +74,7 @@ void V8CanvasRenderingContext2D::strokeStyleAttributeGetterCustom(const v8::Prop
 void V8CanvasRenderingContext2D::strokeStyleAttributeSetterCustom(v8::Local<v8::Value> value, const v8::PropertyCallbackInfo<void>& info)
 {
     CanvasRenderingContext2D* impl = V8CanvasRenderingContext2D::toNative(info.Holder());
-    if (RefPtr<CanvasStyle> canvasStyle = toCanvasStyle(value, info.GetIsolate())) {
+    if (RefPtrWillBeRawPtr<CanvasStyle> canvasStyle = toCanvasStyle(value, info.GetIsolate())) {
         impl->setStrokeStyle(canvasStyle);
     } else {
         TOSTRING_VOID(V8StringResource<>, colorString, value);
@@ -91,7 +91,7 @@ void V8CanvasRenderingContext2D::fillStyleAttributeGetterCustom(const v8::Proper
 void V8CanvasRenderingContext2D::fillStyleAttributeSetterCustom(v8::Local<v8::Value> value, const v8::PropertyCallbackInfo<void>& info)
 {
     CanvasRenderingContext2D* impl = V8CanvasRenderingContext2D::toNative(info.Holder());
-    if (RefPtr<CanvasStyle> canvasStyle = toCanvasStyle(value, info.GetIsolate())) {
+    if (RefPtrWillBeRawPtr<CanvasStyle> canvasStyle = toCanvasStyle(value, info.GetIsolate())) {
         impl->setFillStyle(canvasStyle);
     } else {
         TOSTRING_VOID(V8StringResource<>, colorString, value);