GTK: Remove the one user of GetRTLEnabledSurfaceNamed() and move it over to ResourceBundle().

ui/base/resource/resource_bundle.h

Index: ui/base/resource/resource_bundle.h
diff --git a/ui/base/resource/resource_bundle.h b/ui/base/resource/resource_bundle.h
index 84bc5d510c47097def2b7910b0ac759a11eaf3ab..52d6fe41e4ee78e40a6061da1bbaf47706b06303 100644
--- a/ui/base/resource/resource_bundle.h
+++ b/ui/base/resource/resource_bundle.h
@@ -180,6 +180,9 @@ class UI_EXPORT ResourceBundle {
   // This function flips it in RTL locales.
   GdkPixbuf* GetRTLEnabledPixbufNamed(int resource_id);
 
+  // Same as above, but returns a gfx::Image wrapping the GdkPixbuf.
+  gfx::Image& GetRTLEnabledImageNamed(int resource_id);
+
  private:
   // Shared implementation for the above two functions.
   gfx::Image* GetPixbufImpl(int resource_id, bool rtl_enabled);