Add the pointer type of pen to the synthetic WebMousEvent

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 <memory>
 
 #include "content/common/content_export.h"
@@ skipping 22 matching lines @@
   SyntheticGestureParams(const SyntheticGestureParams& other);
   virtual ~SyntheticGestureParams();
 
   // Describes which type of input events synthetic gesture objects should
   // generate. When specifying DEFAULT_INPUT the platform will be queried for
   // the preferred input event type.
   enum GestureSourceType {
     DEFAULT_INPUT,
     TOUCH_INPUT,
     MOUSE_INPUT,
-    GESTURE_SOURCE_TYPE_MAX = MOUSE_INPUT
+    PEN_INPUT,
+    GESTURE_SOURCE_TYPE_MAX = PEN_INPUT
   };
   GestureSourceType gesture_source_type;
 
   enum GestureType {
     SMOOTH_SCROLL_GESTURE,
     SMOOTH_DRAG_GESTURE,
     PINCH_GESTURE,
     TAP_GESTURE,
     POINTER_ACTION_LIST,
     SYNTHETIC_GESTURE_TYPE_MAX = POINTER_ACTION_LIST
   };
 
   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_