Oilpan: move ImageData to the oilpan heap.

Source/core/html/canvas/CanvasRenderingContext2D.cpp

Index: Source/core/html/canvas/CanvasRenderingContext2D.cpp
diff --git a/Source/core/html/canvas/CanvasRenderingContext2D.cpp b/Source/core/html/canvas/CanvasRenderingContext2D.cpp
index 5adbd20c4097e9c2e9c11f357fa3f9e6ce90d94d..fa06fb6c7fd360cb6c68f7a9e3931c09964e9563 100644
--- a/Source/core/html/canvas/CanvasRenderingContext2D.cpp
+++ b/Source/core/html/canvas/CanvasRenderingContext2D.cpp
@@ -1667,9 +1667,9 @@ GraphicsContext* CanvasRenderingContext2D::drawingContext() const
     return canvas()->drawingContext();
 }
 
-static PassRefPtr<ImageData> createEmptyImageData(const IntSize& size)
+static PassRefPtrWillBeRawPtr<ImageData> createEmptyImageData(const IntSize& size)
 {
-    if (RefPtr<ImageData> data = ImageData::create(size)) {
+    if (RefPtrWillBeRawPtr<ImageData> data = ImageData::create(size)) {
         data->data()->zeroFill();
         return data.release();
     }
@@ -1677,7 +1677,7 @@ static PassRefPtr<ImageData> createEmptyImageData(const IntSize& size)
     return nullptr;
 }
 
-PassRefPtr<ImageData> CanvasRenderingContext2D::createImageData(PassRefPtr<ImageData> imageData, ExceptionState& exceptionState) const
+PassRefPtrWillBeRawPtr<ImageData> CanvasRenderingContext2D::createImageData(PassRefPtrWillBeRawPtr<ImageData> imageData, ExceptionState& exceptionState) const
 {
     if (!imageData) {
         exceptionState.throwDOMException(NotSupportedError, ExceptionMessages::argumentNullOrIncorrectType(1, "ImageData"));
@@ -1687,7 +1687,7 @@ PassRefPtr<ImageData> CanvasRenderingContext2D::createImageData(PassRefPtr<Image
     return createEmptyImageData(imageData->size());
 }
 
-PassRefPtr<ImageData> CanvasRenderingContext2D::createImageData(float sw, float sh, ExceptionState& exceptionState) const
+PassRefPtrWillBeRawPtr<ImageData> CanvasRenderingContext2D::createImageData(float sw, float sh, ExceptionState& exceptionState) const
 {
     if (!sw || !sh)
         exceptionState.throwDOMException(IndexSizeError, String::format("The source %s is 0.", sw ? "height" : "width"));
@@ -1712,7 +1712,7 @@ PassRefPtr<ImageData> CanvasRenderingContext2D::createImageData(float sw, float
     return createEmptyImageData(size);
 }
 
-PassRefPtr<ImageData> CanvasRenderingContext2D::getImageData(float sx, float sy, float sw, float sh, ExceptionState& exceptionState) const
+PassRefPtrWillBeRawPtr<ImageData> CanvasRenderingContext2D::getImageData(float sx, float sy, float sw, float sh, ExceptionState& exceptionState) const
 {
     if (!canvas()->originClean())
         exceptionState.throwSecurityError("The canvas has been tainted by cross-origin data.");