Convert native mouse locations to the locations in screen coordinate in RootWindowHostLinux.

ui/base/events/event.h

 // Copyright (c) 2012 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_BASE_EVENTS_EVENT_H_
 #define UI_BASE_EVENTS_EVENT_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/event_types.h"
@@ skipping 186 matching lines @@
 
    private:
     TestApi();
     LocatedEvent* located_event_;
   };
 
   virtual ~LocatedEvent();
 
   int x() const { return location_.x(); }
   int y() const { return location_.y(); }
+  void set_location(const gfx::Point& location) { location_ = location; }
   gfx::Point location() const { return location_; }
+  void set_root_location(const gfx::Point& root_location) {
+    root_location_ = root_location;
+  }
   gfx::Point root_location() const { return root_location_; }
 
   bool valid_system_location() const { return valid_system_location_; }
   void set_system_location(const gfx::Point& loc) {
     valid_system_location_ = true;
     system_location_ = loc;
   }
   const gfx::Point& system_location() const { return system_location_; }
 
   // Applies |root_transform| to the event.
@@ skipping 411 matching lines @@
   // This value is stored as a bitfield because the number of touch ids varies,
   // but we currently don't need more than 32 touches at a time.
   const unsigned int touch_ids_bitfield_;
 
   DISALLOW_COPY_AND_ASSIGN(GestureEvent);
 };
 
 }  // namespace ui
 
 #endif  // UI_BASE_EVENTS_EVENT_H_