aura: Rename OnWindowVisisbilityChanged() to OnWindowTargetVisibilityChanged().

ui/aura/window_delegate.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_AURA_WINDOW_DELEGATE_H_
 #define UI_AURA_WINDOW_DELEGATE_H_
 
 #include "ui/aura/aura_export.h"
 #include "ui/base/events.h"
 #include "ui/gfx/native_widget_types.h"
@@ skipping 66 matching lines @@
   // children have been destroyed and the window has been removed from its
   // parent.
   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 and the window has been removed from its parent.
   // The delegate can use this as an opportunity to delete itself if necessary.
   virtual void OnWindowDestroyed() = 0;
 
-  // Called when the visibility of a Window changes. See description in
-  // WindowObserver::OnWindowDestroyed() for details.
-  // TODO: this should be renamed to OnWindowTargetVisibilityChanged() to
-  // match when it's sent.
-  virtual void OnWindowVisibilityChanged(bool visible) = 0;
+  // Called when the TargetVisibility() of a Window changes. |visible|
+  // corresponds to the target visibility of the window. See
+  // Window::TargetVisibility() for details.
+  virtual void OnWindowTargetVisibilityChanged(bool visible) = 0;
 
   // Called from Window::HitTest to check if the window has a custom hit test
   // mask. It works similar to the views counterparts. That is, if the function
   // returns true, GetHitTestMask below will be called to get the mask.
   // Otherwise, Window will hit-test against its bounds.
   virtual bool HasHitTestMask() const = 0;
 
   // Called from Window::HitTest to retrieve hit test mask when HasHitTestMask
   // above returns true.
   virtual void GetHitTestMask(gfx::Path* mask) const = 0;
 
  protected:
   virtual ~WindowDelegate() {}
 };
 
 }  // namespace aura
 
 #endif  // UI_AURA_WINDOW_DELEGATE_H_