image: Remove operator for converting from SkBitmap to ImageSkia.

ui/gfx/image/image_skia.h

Index: ui/gfx/image/image_skia.h
diff --git a/ui/gfx/image/image_skia.h b/ui/gfx/image/image_skia.h
index 24422d2f09a5559c1f28a53532925a83daa35130..2518b2c447c9276917833f8b48c018cdd932d23b 100644
--- a/ui/gfx/image/image_skia.h
+++ b/ui/gfx/image/image_skia.h
@@ -53,13 +53,6 @@ class UI_EXPORT ImageSkia {
   // Copies a reference to |other|'s storage.
   ImageSkia& operator=(const ImageSkia& other);
 
-  // Converts from SkBitmap.
-  // Adds ref to passed in bitmap.
-  // DIP width and height are set based on scale factor of 1x.
-  // TODO(pkotwicz): This is temporary till conversion to gfx::ImageSkia is
-  // done.
-  ImageSkia& operator=(const SkBitmap& other);
-
 #if defined(OS_WIN)
   // Converts to gfx::ImageSkiaRep and SkBitmap.
   // TODO(pkotwicz): This is temporary till conversion to gfx::ImageSkia is