Move download messages from Renderer to Frame filter.

content/renderer/render_view_impl.h

Index: content/renderer/render_view_impl.h
diff --git a/content/renderer/render_view_impl.h b/content/renderer/render_view_impl.h
index 2d4f6f49a1d209ce0b37f018aecb08872d0bac8a..ffc68251d97522afa93a365aee62a50b586fd042 100644
--- a/content/renderer/render_view_impl.h
+++ b/content/renderer/render_view_impl.h
@@ -338,7 +338,6 @@ class CONTENT_EXPORT RenderViewImpl
   bool enumerateChosenDirectory(
       const blink::WebString& path,
       blink::WebFileChooserCompletion* chooser_completion) override;
-  void saveImageFromDataURL(const blink::WebString& data_url) override;
   void didCancelCompositionOnSelectionChange() override;
   bool handleCurrentKeyboardEvent() override;
   void SetValidationMessageDirection(base::string16* main_text,
@@ -608,8 +607,6 @@ class CONTENT_EXPORT RenderViewImpl
 
   void OnShowContextMenu(ui::MenuSourceType source_type,
                          const gfx::Point& location);
-  void OnCopyImageAt(int x, int y);
-  void OnSaveImageAt(int x, int y);
   void OnDeterminePageLanguage();
   void OnDisableScrollbarsForSmallWindows(
       const gfx::Size& disable_scrollbars_size_limit);