Adds a small icon to notifications, and connects it to synced notifications.

ui/message_center/views/message_view.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef UI_MESSAGE_CENTER_VIEWS_MESSAGE_VIEW_H_
 #define UI_MESSAGE_CENTER_VIEWS_MESSAGE_VIEW_H_
 
 #include "base/memory/scoped_ptr.h"
 #include "base/strings/string16.h"
 #include "ui/gfx/insets.h"
 #include "ui/message_center/message_center_export.h"
 #include "ui/message_center/notification.h"
 #include "ui/views/controls/button/button.h"
 #include "ui/views/controls/slide_out_view.h"
 
 namespace ui {
 class MenuModel;
 }
 
 namespace views {
 class ImageButton;
+class ImageView;
 class Painter;
 class ScrollView;
 }
 
 namespace message_center {
 
 // Interface that MessageView uses to report clicks and other user actions.
 // Provided by creator of MessageView.
 class MessageViewController {
  public:
   virtual void ClickOnNotification(const std::string& notification_id) = 0;
   virtual void RemoveNotification(const std::string& notification_id,
                                   bool by_user) = 0;
 };
 
 // Individual notifications constants.
 const int kPaddingBetweenItems = 10;
 const int kPaddingHorizontal = 18;
 const int kWebNotificationButtonWidth = 32;
 const int kWebNotificationIconSize = 40;
 
 // An base class for a notification entry. Contains background, close button
 // and other elements shared by derived notification views.
 class MESSAGE_CENTER_EXPORT MessageView : public views::SlideOutView,
                                           public views::ButtonListener {
  public:
   MessageView(MessageViewController* controller,
               const std::string& notification_id,
               const NotifierId& notifier_id,
+              const gfx::ImageSkia& small_image,
               const base::string16& display_source);
   virtual ~MessageView();
 
   // Returns the insets for the shadow it will have for rich notification.
   static gfx::Insets GetShadowInsets();
 
   // Creates a shadow around the notification.
   void CreateShadowBorder();
 
   bool IsCloseButtonFocused();
@@ skipping 22 matching lines @@
 
   void set_scroller(views::ScrollView* scroller) { scroller_ = scroller; }
   std::string notification_id() { return notification_id_; }
   NotifierId notifier_id() { return notifier_id_; }
   const base::string16& display_source() const { return display_source_; }
 
  protected:
   // Overridden from views::SlideOutView:
   virtual void OnSlideOut() OVERRIDE;
 
+  views::ImageView* small_image() { return small_image_view_.get(); }
   views::ImageButton* close_button() { return close_button_.get(); }
   views::ScrollView* scroller() { return scroller_; }
 
  private:
   MessageViewController* controller_;
   std::string notification_id_;
   NotifierId notifier_id_;
   views::View* background_view_;  // Owned by views hierarchy.
   scoped_ptr<views::ImageButton> close_button_;
+  scoped_ptr<views::ImageView> small_image_view_;
   views::ScrollView* scroller_;
 
   base::string16 accessible_name_;
 
   base::string16 display_source_;
 
   scoped_ptr<views::Painter> focus_painter_;
 
   DISALLOW_COPY_AND_ASSIGN(MessageView);
 };
 
 }  // namespace message_center
 
 #endif // UI_MESSAGE_CENTER_VIEWS_MESSAGE_VIEW_H_