Correct behaviour of touch wrt mouse capture.

ui/base/events.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_H_
 #define UI_BASE_EVENTS_H_
 
 #include "base/event_types.h"
 #include "ui/base/keycodes/keyboard_codes.h"
 #include "ui/gfx/native_widget_types.h"
@@ skipping 190 matching lines @@
 UI_EXPORT bool IsTouchpadEvent(const base::NativeEvent& event);
 
 // Returns true if event is noop.
 UI_EXPORT bool IsNoopEvent(const base::NativeEvent& event);
 
 // Creates and returns no-op event.
 UI_EXPORT base::NativeEvent CreateNoopEvent();
 
 #if defined(OS_WIN)
 UI_EXPORT int GetModifiersFromACCEL(const ACCEL& accel);
+
+// Returns true if |message| identifies a mouse event that was generated as the
+// result of a touch event.
+UI_EXPORT bool IsMouseEventFromTouch(UINT message);
 #endif
 
 }  // namespace ui
 
 #endif  // UI_BASE_EVENTS_H_