Refactoring ImageBuffer to decouple it from Canvas2DLayerBridge

Source/platform/graphics/CrossfadeGeneratedImage.cpp

Index: Source/platform/graphics/CrossfadeGeneratedImage.cpp
diff --git a/Source/platform/graphics/CrossfadeGeneratedImage.cpp b/Source/platform/graphics/CrossfadeGeneratedImage.cpp
index c5db33152fc3d7b388001eb51835be60cd56cd12..dcbcabf37772ab321a22d422a73b69cb77252644 100644
--- a/Source/platform/graphics/CrossfadeGeneratedImage.cpp
+++ b/Source/platform/graphics/CrossfadeGeneratedImage.cpp
@@ -99,7 +99,7 @@ void CrossfadeGeneratedImage::draw(GraphicsContext* context, const FloatRect& ds
 
 void CrossfadeGeneratedImage::drawPattern(GraphicsContext* context, const FloatRect& srcRect, const FloatSize& scale, const FloatPoint& phase, CompositeOperator compositeOp, const FloatRect& dstRect, blink::WebBlendMode blendMode, const IntSize& repeatSpacing)
 {
-    OwnPtr<ImageBuffer> imageBuffer = ImageBuffer::create(m_size, 1, context->isAccelerated() ? Accelerated : Unaccelerated);
+    OwnPtr<ImageBuffer> imageBuffer = context->createCompatibleBuffer(m_size);
     if (!imageBuffer)
         return;