Show icons for custom menuitems in contextmenu.

components/renderer_context_menu/render_view_context_menu_base.h

Index: components/renderer_context_menu/render_view_context_menu_base.h
diff --git a/components/renderer_context_menu/render_view_context_menu_base.h b/components/renderer_context_menu/render_view_context_menu_base.h
index 779e8bbd9297aa178665649f6a32371860e6573d..b77926f9d8f19a01f575be056f26fafeea6b5761 100644
--- a/components/renderer_context_menu/render_view_context_menu_base.h
+++ b/components/renderer_context_menu/render_view_context_menu_base.h
@@ -51,6 +51,8 @@ class RenderViewContextMenuBase : public ui::SimpleMenuModel::Delegate,
                                 bool enabled,
                                 bool hidden,
                                 const base::string16& title) = 0;
+    // Set icon to the actual menu items controlled by the toolkit.
+    virtual void SetIcon(int command_id, const gfx::Image& icon) = 0;
   };
 
   static const size_t kMaxSelectionTextLength;
@@ -104,6 +106,7 @@ class RenderViewContextMenuBase : public ui::SimpleMenuModel::Delegate,
                       bool enabled,
                       bool hidden,
                       const base::string16& title) override;
+  void SetIcon(int command_id, const gfx::Image& icon) override;
   content::RenderViewHost* GetRenderViewHost() const override;
   content::WebContents* GetWebContents() const override;
   content::BrowserContext* GetBrowserContext() const override;
@@ -181,11 +184,24 @@ class RenderViewContextMenuBase : public ui::SimpleMenuModel::Delegate,
 
  private:
   bool AppendCustomItems();
-
+  void AddCustomItemsToMenu(const std::vector<content::MenuItem>& items,
+                            size_t depth,
+                            size_t* total_items,
+                            ui::SimpleMenuModel::Delegate* delegate,
+                            ui::SimpleMenuModel* menu_model);
+  void OnIconDownloaded(int id,
+                        int http_status_code,
+                        const GURL& image_url,
+                        const std::vector<SkBitmap>& bitmaps,
+                        const std::vector<gfx::Size>& original_bitmap_sizes);
+
+  typedef std::map<int, int> IconMap;
+  IconMap icon_map_;
   // The RenderFrameHost's IDs.
   int render_process_id_;
 
   scoped_ptr<ToolkitDelegate> toolkit_delegate_;
+  base::WeakPtrFactory<RenderViewContextMenuBase> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderViewContextMenuBase);
 };