Bug 979905 - Make VectorImage use a Moz2D backed gfxContext. r=mattwoodrow

image/src/VectorImage.cpp

@@ -14,6 +14,8 @@
 #include "mozilla/AutoRestore.h"
 #include "mozilla/MemoryReporting.h"
 #include "mozilla/dom/SVGSVGElement.h"
+#include "mozilla/gfx/2D.h"
+#include "mozilla/RefPtr.h"
 #include "nsIDOMEvent.h"
 #include "nsIPresShell.h"
 #include "nsIStreamListener.h"
@@ -680,7 +682,16 @@ VectorImage::GetFrame(uint32_t aWhichFrame,
 
   nsRefPtr<gfxImageSurface> surface =
     new gfxImageSurface(surfaceSize, gfxImageFormat::ARGB32);
-  nsRefPtr<gfxContext> context = new gfxContext(surface);
+
+  RefPtr<DrawTarget> drawTarget =
+    Factory::CreateDrawTargetForData(BackendType::CAIRO,
+                                     surface->Data(),
+                                     IntSize(imageIntSize.width,
+                                             imageIntSize.height),
+                                     surface->Stride(),
+                                     SurfaceFormat::B8G8R8A8);
+
+  nsRefPtr<gfxContext> context = new gfxContext(drawTarget);
 
   // Draw to our surface!
   // --------------------