[Ozone-DRI] Do proper bounds checks when moving the cursor

ui/ozone/platform/dri/dri_window_delegate_manager.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 UI_OZONE_PLATFORM_DRI_DRI_WINDOW_MANAGER_H_
-#define UI_OZONE_PLATFORM_DRI_DRI_WINDOW_MANAGER_H_
+#ifndef UI_OZONE_PLATFORM_DRI_DRI_WINDOW_DELEGATE_MANAGER_H_
+#define UI_OZONE_PLATFORM_DRI_DRI_WINDOW_DELEGATE_MANAGER_H_
 
 #include "base/containers/scoped_ptr_hash_map.h"
 #include "ui/gfx/native_widget_types.h"
 
 namespace ui {
 
 class DriWindowDelegate;
 
-class DriWindowManager {
+class DriWindowDelegateManager {
  public:
-  DriWindowManager();
-  ~DriWindowManager();
-
-  gfx::AcceleratedWidget NextAcceleratedWidget();
+  DriWindowDelegateManager();
+  ~DriWindowDelegateManager();
 
   // Adds a delegate for |widget|. Note: |widget| should not be associated with
   // a delegate when calling this function.
   void AddWindowDelegate(gfx::AcceleratedWidget widget,
                          scoped_ptr<DriWindowDelegate> surface);
 
   // Removes the delegate for |widget|. Note: |widget| must have a delegate
   // associated with it when calling this function.
   scoped_ptr<DriWindowDelegate> RemoveWindowDelegate(
       gfx::AcceleratedWidget widget);
 
   // Returns the delegate associated with |widget|. Note: This function should
   // be called only if a valid delegate has been associated with |widget|.
   DriWindowDelegate* GetWindowDelegate(gfx::AcceleratedWidget widget);
 
   // Check if |widget| has a valid delegate associated with it.
   bool HasWindowDelegate(gfx::AcceleratedWidget widget);
 
  private:
   typedef base::ScopedPtrHashMap<gfx::AcceleratedWidget, DriWindowDelegate>
       WidgetToDelegateMap;
 
   WidgetToDelegateMap delegate_map_;
-  gfx::AcceleratedWidget last_allocated_widget_;
 
-  DISALLOW_COPY_AND_ASSIGN(DriWindowManager);
+  DISALLOW_COPY_AND_ASSIGN(DriWindowDelegateManager);
 };
 
 }  // namespace ui
 
-#endif  // UI_OZONE_PLATFORM_DRI_DRI_WINDOW_MANAGER_H_
+#endif  // UI_OZONE_PLATFORM_DRI_DRI_WINDOW_DELEGATE_MANAGER_H_