Add the pointer type of pen to the synthetic WebMousEvent

content/browser/BUILD.gn

 # Copyright 2014 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.
 
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//media/media_options.gni")
 import("//ppapi/features/features.gni")
 import("//printing/features/features.gni")
 import("//third_party/WebKit/public/public_features.gni")
@@ skipping 1038 matching lines @@
     "renderer_host/input/synthetic_gesture_controller.h",
     "renderer_host/input/synthetic_gesture_target.h",
     "renderer_host/input/synthetic_gesture_target_aura.cc",
     "renderer_host/input/synthetic_gesture_target_aura.h",
     "renderer_host/input/synthetic_gesture_target_base.cc",
     "renderer_host/input/synthetic_gesture_target_base.h",
     "renderer_host/input/synthetic_gesture_target_mac.h",
     "renderer_host/input/synthetic_gesture_target_mac.mm",
     "renderer_host/input/synthetic_mouse_driver.cc",
     "renderer_host/input/synthetic_mouse_driver.h",
+    "renderer_host/input/synthetic_pen_driver.cc",
+    "renderer_host/input/synthetic_pen_driver.h",
     "renderer_host/input/synthetic_pinch_gesture.cc",
     "renderer_host/input/synthetic_pinch_gesture.h",
     "renderer_host/input/synthetic_pointer_action.cc",
     "renderer_host/input/synthetic_pointer_action.h",
     "renderer_host/input/synthetic_pointer_driver.cc",
     "renderer_host/input/synthetic_pointer_driver.h",
     "renderer_host/input/synthetic_smooth_drag_gesture.cc",
     "renderer_host/input/synthetic_smooth_drag_gesture.h",
     "renderer_host/input/synthetic_smooth_move_gesture.cc",
     "renderer_host/input/synthetic_smooth_move_gesture.h",
@@ skipping 949 matching lines @@
   if (!is_component_build) {
     public_deps = [
       ":browser",
     ]
   } else {
     public_deps = [
       "//third_party/leveldatabase",
     ]
   }
 }