Bug 1008211 - Don't use BufferTextureClient in CanvasClient2D. r=Bas

gfx/layers/client/CanvasClient.cpp

@@ -70,9 +70,10 @@ CanvasClient2D::Update(gfx::IntSize aSize, ClientCanvasLayer* aLayer)
     if (mTextureFlags & TextureFlags::NEEDS_Y_FLIP) {
       flags |= TextureFlags::NEEDS_Y_FLIP;
     }
-    mBuffer = CreateBufferTextureClient(gfx::ImageFormatToSurfaceFormat(format),
+    mBuffer = CreateTextureClientForDrawing(gfx::ImageFormatToSurfaceFormat(format),
                                             flags,
-                                        gfxPlatform::GetPlatform()->GetPreferredCanvasBackend());
+                                            gfxPlatform::GetPlatform()->GetPreferredCanvasBackend(),
+                                            aSize);
     MOZ_ASSERT(mBuffer->CanExposeDrawTarget());
     mBuffer->AllocateForSurface(aSize);