athena: Introduce ActivityView.

athena/activity/activity_frame_view.h

 // Copyright 2014 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 ATHENA_ACTIVITY_ACTIVITY_FRAME_VIEW_H_
 #define ATHENA_ACTIVITY_ACTIVITY_FRAME_VIEW_H_
 
+#include "athena/activity/public/activity_view.h"
+#include "athena/activity/public/activity_view_model.h"
 #include "athena/wm/public/window_manager_observer.h"
 #include "ui/gfx/insets.h"
 #include "ui/views/window/non_client_view.h"
 
 namespace views {
 class ImageView;
 class Label;
 class Widget;
 }
 
 namespace athena {
 
 class ActivityViewModel;
 
 // A NonClientFrameView used for activity.
 class ActivityFrameView : public views::NonClientFrameView,
-                          public WindowManagerObserver {
+                          public WindowManagerObserver,
+                          public ActivityView {
  public:
   // The frame class name.
   static const char kViewClassName[];
 
   ActivityFrameView(views::Widget* frame, ActivityViewModel* view_model);
   ~ActivityFrameView() override;
 
   // views::NonClientFrameView:
   gfx::Rect GetBoundsForClientView() const override;
   gfx::Rect GetWindowBoundsForClientBounds(
       const gfx::Rect& client_bounds) const override;
   int NonClientHitTest(const gfx::Point& point) override;
   void GetWindowMask(const gfx::Size& size, gfx::Path* window_mask) override;
   void ResetWindowControls() override;
   void UpdateWindowIcon() override;
   void UpdateWindowTitle() override;
   void SizeConstraintsChanged() override;
 
   // views::View:
   gfx::Size GetPreferredSize() const override;
   const char* GetClassName() const override;
   void Layout() override;
   void OnPaintBackground(gfx::Canvas* canvas) override;
 
  private:
+  // ActivityView:
+  void UpdateTitle() override;
+  void UpdateIcon() override;
+  void UpdateRepresentativeColor() override;
+
   // WindowManagerObserver:
   void OnOverviewModeEnter() override;
   void OnOverviewModeExit() override;
   void OnSplitViewModeEnter() override;
   void OnSplitViewModeExit() override;
 
   gfx::Insets NonClientBorderInsets() const;
   int NonClientBorderThickness() const;
   int NonClientTopBorderHeight() const;
 
   // Not owned.
   views::Widget* frame_;
   ActivityViewModel* view_model_;
   views::Label* title_;
   views::ImageView* icon_;
 
   // Whether overview mode is active.
   bool in_overview_;
 
   DISALLOW_COPY_AND_ASSIGN(ActivityFrameView);
 };
 
 }  // namespace athena
 
 #endif  // ATHENA_ACTIVITY_ACTIVITY_FRAME_VIEW_H_