Add SyntheticPointerActionParams used in Chromedriver extension

content/common/input/synthetic_gesture_params.h

 // Copyright 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 CONTENT_COMMON_INPUT_SYNTHETIC_GESTURE_PARAMS_H_
 #define CONTENT_COMMON_INPUT_SYNTHETIC_GESTURE_PARAMS_H_
 
 #include "base/memory/scoped_ptr.h"
 #include "content/common/content_export.h"
 
@@ skipping 30 matching lines @@
     MOUSE_INPUT,
     GESTURE_SOURCE_TYPE_MAX = MOUSE_INPUT
   };
   GestureSourceType gesture_source_type;
 
   enum GestureType {
     SMOOTH_SCROLL_GESTURE,
     SMOOTH_DRAG_GESTURE,
     PINCH_GESTURE,
     TAP_GESTURE,
-    SYNTHETIC_GESTURE_TYPE_MAX = TAP_GESTURE
+    POINTER_ACTION,
+    SYNTHETIC_GESTURE_TYPE_MAX = POINTER_ACTION
   };
+
   virtual GestureType GetGestureType() const = 0;
 
   // Returns true if the specific gesture source type is supported on this
   // platform.
   static bool IsGestureSourceTypeSupported(
       GestureSourceType gesture_source_type);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_COMMON_INPUT_SYNTHETIC_GESTURE_PARAMS_H_