Adds switch to disable generating mouse events from touch events and

ui/aura/root_window.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_AURA_ROOT_WINDOW_H_
 #define UI_AURA_ROOT_WINDOW_H_
 #pragma once
 
 #include <vector>
 
@@ skipping 351 matching lines @@
 
   // Use to post mouse move event.
   base::WeakPtrFactory<RootWindow> event_factory_;
 
   // Last location seen in a mouse event.
   gfx::Point last_mouse_location_;
 
   // ui::EventFlags containing the current state of the mouse buttons.
   int mouse_button_flags_;
 
+  // Touch ids that are currently down.
+  uint32 touch_ids_down_;
+
   // Last cursor set.  Used for testing.
   gfx::NativeCursor last_cursor_;
 
   // Is the cursor currently shown?  Used for testing.
   bool cursor_shown_;
 
   ObserverList<RootWindowObserver> observers_;
 
   // The capture window. When not-null, this window receives all the mouse and
   // touch events.
@@ skipping 22 matching lines @@
   bool draw_on_compositor_unlock_;
 
   int draw_trace_count_;
 
   DISALLOW_COPY_AND_ASSIGN(RootWindow);
 };
 
 }  // namespace aura
 
 #endif  // UI_AURA_ROOT_WINDOW_H_