Correctly convert warp bounds from screen to native.

ash/display/display_util.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 ASH_DISPLAY_DISPLAY_UTIL_H_
 #define ASH_DISPLAY_DISPLAY_UTIL_H_
 
 #include <vector>
 
 #include "ash/ash_export.h"
@@ skipping 24 matching lines @@
 // Computes the bounds that defines the bounds between two displays
 // based on the layout |position|.
 void ComputeBoundary(const gfx::Display& primary_display,
                      const gfx::Display& secondary_display,
                      DisplayLayout::Position position,
                      gfx::Rect* primary_edge_in_screen,
                      gfx::Rect* secondary_edge_in_screen);
 
 // Creates edge bounds from |bounds_in_screen| that fits the edge
 // of the native window for |ash_host|.
-gfx::Rect GetNativeEdgeBounds(AshWindowTreeHost* ash_host,
-                              const gfx::Rect& bounds_in_screen);
+ASH_EXPORT gfx::Rect GetNativeEdgeBounds(AshWindowTreeHost* ash_host,
+                                         const gfx::Rect& bounds_in_screen);
 
 // Moves the cursor to the point inside the |ash_host| that is closest to
 // the point_in_screen, which may be outside of the root window.
 // |update_last_loation_now| is used for the test to update the mouse
 // location synchronously.
 void MoveCursorTo(AshWindowTreeHost* ash_host,
                   const gfx::Point& point_in_screen,
                   bool update_last_location_now);
 
 // Returns the index in the displays whose bounds contains |point_in_screen|.
 // Returns -1 if no such display exist.
 ASH_EXPORT int FindDisplayIndexContainingPoint(
     const std::vector<gfx::Display>& displays,
     const gfx::Point& point_in_screen);
 
 }  // namespace ash
 
 #endif  // ASH_DISPLAY_DISPLAY_UTIL_H_