Remove ExtractImageRep usage in CanvasImageSource.

ui/gfx/image/canvas_image_source.cc

Index: ui/gfx/image/canvas_image_source.cc
diff --git a/ui/gfx/image/canvas_image_source.cc b/ui/gfx/image/canvas_image_source.cc
index e53257fe0d658342f194ead104d52c6354c399c7..728977c0ef324ff71472af97241046d7cf73caa3 100644
--- a/ui/gfx/image/canvas_image_source.cc
+++ b/ui/gfx/image/canvas_image_source.cc
@@ -21,7 +21,7 @@ CanvasImageSource::CanvasImageSource(const gfx::Size& size, bool is_opaque)
 gfx::ImageSkiaRep CanvasImageSource::GetImageForScale(float scale) {
   gfx::Canvas canvas(size_, scale, is_opaque_);
   Draw(&canvas);
-  return canvas.ExtractImageRep();
+  return gfx::ImageSkiaRep(canvas.GetBitmap(), scale);
 }
 
 }  // namespace gfx