Toggle avatar color when window activation changes.

ui/views/window/non_client_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_VIEWS_WINDOW_NON_CLIENT_VIEW_H_
 #define UI_VIEWS_WINDOW_NON_CLIENT_VIEW_H_
 
 #include "base/macros.h"
 #include "ui/views/view.h"
 #include "ui/views/view_targeter_delegate.h"
@@ skipping 66 matching lines @@
   // accordingly. |size| is the size of the widget.
   virtual void GetWindowMask(const gfx::Size& size,
                              gfx::Path* window_mask) = 0;
   virtual void ResetWindowControls() = 0;
   virtual void UpdateWindowIcon() = 0;
   virtual void UpdateWindowTitle() = 0;
 
   // Whether the widget can be resized or maximized has changed.
   virtual void SizeConstraintsChanged() = 0;
 
+  // The widget's activation state has changed to |active|.
+  virtual void ActivationChanged(bool active);
+
   // View:
   void GetAccessibleState(ui::AXViewState* state) override;
   const char* GetClassName() const override;
 
  protected:
   NonClientFrameView();
 
   // ViewTargeterDelegate:
   bool DoesIntersectRect(const View* target,
                          const gfx::Rect& rect) const override;
 
   // View:
   void OnBoundsChanged(const gfx::Rect& previous_bounds) override;
+
+  void set_active_state_override(bool* active_state_override) {
+    active_state_override_ = active_state_override;
+  }
+
+ private:
+  // Used to force ShouldPaintAsActive() to treat the active state a particular
+  // way.  This is normally null; when non-null, its value will override the
+  // normal "active" value computed by the function.
+  bool* active_state_override_;
+
+  DISALLOW_COPY_AND_ASSIGN(NonClientFrameView);
 };
 
 ////////////////////////////////////////////////////////////////////////////////
 // NonClientView
 //
 //  The NonClientView is the logical root of all Views contained within a
 //  Window, except for the RootView which is its parent and of which it is the
 //  sole child. The NonClientView has two children, the NonClientFrameView which
 //  is responsible for painting and responding to events from the non-client
 //  portions of the window, and the ClientView, which is responsible for the
@@ skipping 132 matching lines @@
 
   // The accessible name of this view.
   base::string16 accessible_name_;
 
   DISALLOW_COPY_AND_ASSIGN(NonClientView);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_WINDOW_NON_CLIENT_VIEW_H_