Refactoring ImageBuffer to decouple it from Canvas2DLayerBridge

Source/core/rendering/svg/SVGRenderingContext.cpp

Index: Source/core/rendering/svg/SVGRenderingContext.cpp
diff --git a/Source/core/rendering/svg/SVGRenderingContext.cpp b/Source/core/rendering/svg/SVGRenderingContext.cpp
index 82a6fe69cf96b3e56298981c16f10066a81d5597..5346143311b85557ff7a7c91a501ef0a5ab681b8 100644
--- a/Source/core/rendering/svg/SVGRenderingContext.cpp
+++ b/Source/core/rendering/svg/SVGRenderingContext.cpp
@@ -287,13 +287,13 @@ bool SVGRenderingContext::bufferForeground(OwnPtr<ImageBuffer>& imageBuffer)
         AffineTransform transform = m_paintInfo->context->getCTM(GraphicsContext::DefinitelyIncludeDeviceScale);
         IntSize expandedBoundingBox = expandedIntSize(boundingBox.size());
         IntSize bufferSize(static_cast<int>(ceil(expandedBoundingBox.width() * transform.xScale())), static_cast<int>(ceil(expandedBoundingBox.height() * transform.yScale())));
-        if (bufferSize != imageBuffer->internalSize())
+        if (bufferSize != imageBuffer->size())
             imageBuffer.clear();
     }
 
     // Create a new buffer and paint the foreground into it.
     if (!imageBuffer) {
-        if ((imageBuffer = m_paintInfo->context->createCompatibleBuffer(expandedIntSize(boundingBox.size()), true))) {
+        if ((imageBuffer = m_paintInfo->context->createCompatibleBuffer(expandedIntSize(boundingBox.size())))) {
             GraphicsContext* bufferedRenderingContext = imageBuffer->context();
             bufferedRenderingContext->translate(-boundingBox.x(), -boundingBox.y());
             PaintInfo bufferedInfo(*m_paintInfo);