views: Make the menu size the same as the menubutton size in the media bubble.

chrome/browser/ui/views/content_setting_bubble_contents.h

Index: chrome/browser/ui/views/content_setting_bubble_contents.h
diff --git a/chrome/browser/ui/views/content_setting_bubble_contents.h b/chrome/browser/ui/views/content_setting_bubble_contents.h
index e39156844c3937848d85226f7e4ff9d6ba698064..94ed3179797065680313361c51a892c845c26076 100644
--- a/chrome/browser/ui/views/content_setting_bubble_contents.h
+++ b/chrome/browser/ui/views/content_setting_bubble_contents.h
@@ -76,6 +76,9 @@ class ContentSettingBubbleContents : public content::WebContentsObserver,
       const content::LoadCommittedDetails& details,
       const content::FrameNavigateParams& params) OVERRIDE;
 
+  // views::View:
+  virtual void OnNativeThemeChanged(const ui::NativeTheme* theme) OVERRIDE;
+
   // views::ButtonListener:
   virtual void ButtonPressed(views::Button* sender,
                              const ui::Event& event) OVERRIDE;
@@ -88,8 +91,7 @@ class ContentSettingBubbleContents : public content::WebContentsObserver,
                                    const gfx::Point& point) OVERRIDE;
 
   // Helper to get the preferred width of the media menu.
-  int GetPreferredMediaMenuWidth(views::MenuButton* button,
-                                 ui::SimpleMenuModel* menu_model);
+  void UpdateMenuButtonSizes(const ui::NativeTheme* theme);
 
   // Provides data for this bubble.
   scoped_ptr<ContentSettingBubbleModel> content_setting_bubble_model_;