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

ui/ozone/platform/dri/dri_cursor.h

Index: ui/ozone/platform/dri/dri_cursor.h
diff --git a/ui/ozone/platform/dri/dri_cursor.h b/ui/ozone/platform/dri/dri_cursor.h
index ece6b423138bd862e1b701faa88507b24d318046..949584cbc2ad5ce9062865f869fca0652d52df94 100644
--- a/ui/ozone/platform/dri/dri_cursor.h
+++ b/ui/ozone/platform/dri/dri_cursor.h
@@ -19,11 +19,13 @@ namespace ui {
 
 class BitmapCursorOzone;
 class BitmapCursorFactoryOzone;
+class DriWindowManager;
 class HardwareCursorDelegate;
 
 class DriCursor : public CursorDelegateEvdev {
  public:
-  explicit DriCursor(HardwareCursorDelegate* hardware);
+  explicit DriCursor(HardwareCursorDelegate* hardware,
+                     DriWindowManager* window_manager);
   virtual ~DriCursor();
 
   void SetCursor(gfx::AcceleratedWidget widget, PlatformCursor platform_cursor);
@@ -45,6 +47,8 @@ class DriCursor : public CursorDelegateEvdev {
   // The DRI implementation for setting the hardware cursor.
   HardwareCursorDelegate* hardware_;
 
+  DriWindowManager* window_manager_;  // Not owned.
+
   // The current cursor bitmap.
   scoped_refptr<BitmapCursorOzone> cursor_;