ozone: dri: Support moving between displays in MoveCursorTo(location)

ui/ozone/platform/dri/dri_window_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_
 
 #include <map>
 
 #include "base/memory/scoped_ptr.h"
 #include "ui/gfx/native_widget_types.h"
 
+namespace gfx {
+class Point;
+}
+
 namespace ui {
 
 class DriCursor;
 class DriGpuPlatformSupportHost;
 class DriWindow;
 
 // Responsible for keeping the mapping between the allocated widgets and
 // windows.
 class DriWindowManager {
  public:
   explicit DriWindowManager(DriGpuPlatformSupportHost* sender);
   ~DriWindowManager();
 
   gfx::AcceleratedWidget NextAcceleratedWidget();
 
   // Adds a window for |widget|. Note: |widget| should not be associated when
   // calling this function.
   void AddWindow(gfx::AcceleratedWidget widget, DriWindow* window);
 
   // Removes the window association for |widget|. Note: |widget| must be
   // associated with a window when calling this function.
   void RemoveWindow(gfx::AcceleratedWidget widget);
 
   // Returns the window associated with |widget|. Note: This function should
   // only be called if a valid window has been associated.
   DriWindow* GetWindow(gfx::AcceleratedWidget widget);
 
+  // Returns the window containing the specified screen location, or NULL.
+  DriWindow* GetWindowAt(const gfx::Point& location);
+
   DriCursor* cursor() const { return cursor_.get(); }
 
  private:
   // Reset the cursor location based on the list of active windows.
   void ResetCursorLocation();
 
   typedef std::map<gfx::AcceleratedWidget, DriWindow*> WidgetToWindowMap;
 
   gfx::AcceleratedWidget last_allocated_widget_;
   WidgetToWindowMap window_map_;
 
   scoped_ptr<DriCursor> cursor_;
 
   DISALLOW_COPY_AND_ASSIGN(DriWindowManager);
 };
 
 }  // namespace ui
 
 #endif  // UI_OZONE_PLATFORM_DRI_DRI_WINDOW_MANAGER_H_