Wires up mouse capture code for aura.

ui/aura/window_delegate.h

 // Copyright (c) 2011 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_AURA_WINDOW_DELEGATE_H_
 #define UI_AURA_WINDOW_DELEGATE_H_
 #pragma once
 
 namespace gfx {
 class Canvas;
@@ skipping 18 matching lines @@
   virtual void OnBlur() = 0;
 
   virtual bool OnKeyEvent(KeyEvent* event) = 0;
 
   // Returns the non-client component (see hit_test.h) containing |point|, in
   // window coordinates.
   virtual int GetNonClientComponent(const gfx::Point& point) const = 0;
 
   virtual bool OnMouseEvent(MouseEvent* event) = 0;
 
+  // Invoked when mouse capture is gained on the window.
+  virtual void OnCaptureGained() = 0;
+
+  // Invoked when mouse capture is lost on the window.
+  virtual void OnCaptureLost() = 0;
+
   // Asks the delegate to paint window contents into the supplied canvas.
   virtual void OnPaint(gfx::Canvas* canvas) = 0;
 
   // Called from Window's destructor before OnWindowDestroyed and before the
   // children have been destroyed.
   virtual void OnWindowDestroying() = 0;
 
   // Called when the Window has been destroyed (i.e. from its destructor). This
   // is called after OnWindowDestroying and after the children have been
   // deleted.
   // The delegate can use this as an opportunity to delete itself if necessary.
   virtual void OnWindowDestroyed() = 0;
 
  protected:
   virtual ~WindowDelegate() {}
 };
 
 }  // namespace aura
 
 #endif  // UI_AURA_WINDOW_DELEGATE_H_