aura: Rename OnWindowVisisbilityChanged() to OnWindowTargetVisibilityChanged().

ui/aura/window_unittest.cc

 // 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.
 
 #include "ui/aura/window.h"
 
 #include <utility>
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
@@ skipping 1150 matching lines @@
         hidden_(0) {
   }
 
   int shown() const { return shown_; }
   int hidden() const { return hidden_; }
   void Clear() {
     shown_ = 0;
     hidden_ = 0;
   }
 
-  virtual void OnWindowVisibilityChanged(bool visible) OVERRIDE {
+  virtual void OnWindowTargetVisibilityChanged(bool visible) OVERRIDE {
     if (visible)
       shown_++;
     else
       hidden_++;
   }
 
  private:
   int shown_;
   int hidden_;
 
@@ skipping 1260 matching lines @@
   element->Step(start_time + base::TimeDelta::FromMilliseconds(1000));
 
   // No bounds changed notification at the end of animation since layer
   // delegate is NULL.
   EXPECT_FALSE(delegate.bounds_changed());
   EXPECT_NE("0,0 100x100", window->bounds().ToString());
 }
 
 }  // namespace test
 }  // namespace aura