Add more tests for mouse rotation,scale&position after display change

ash/test/mirror_window_test_api.h

 // Copyright (c) 2013 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 ASH_TEST_MIRROR_WINDOW_TEST_API_H_
 #define ASH_TEST_MIRROR_WINDOW_TEST_API_H_
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 
@@ skipping 12 matching lines @@
 namespace test {
 
 class MirrorWindowTestApi {
  public:
   MirrorWindowTestApi() {}
   ~MirrorWindowTestApi() {}
 
   const aura::WindowTreeHost* GetHost() const;
 
   int GetCurrentCursorType() const;
+
+  // Returns the position of the hot point within the cursor. This is
+  // unaffected by the cursor location.
   const gfx::Point& GetCursorHotPoint() const;
+
+  // Returns the position of the cursor hot point in root window coordinates.
+  // This should be the same as the native cursor location.
+  gfx::Point GetCursorHotPointLocationInRootWindow() const;
+
   const aura::Window* GetCursorWindow() const;
   gfx::Point GetCursorLocation() const;
 
   scoped_ptr<RootWindowTransformer> CreateCurrentRootWindowTransformer() const;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(MirrorWindowTestApi);
 };
 
 }  // namespace test
 }  // namespace ash
 
 #endif  // ASH_TEST_MIRROR_WINDOW_TEST_API_H_