ash: Add the SYNTHETIC flag to mouse-events generated from gestures.

ui/aura/aura.gyp

 # 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.
 
 {
   'variables': {
     'chromium_code': 1,
   },
   'targets': [
     {
@@ skipping 226 matching lines @@
       'include_dirs': [
         '..',
       ],
       'sources': [
         'gestures/gesture_recognizer_unittest.cc',
         'test/run_all_unittests.cc',
         'test/test_suite.cc',
         'test/test_suite.h',
         'root_window_unittest.cc',
         'shared/input_method_event_filter_unittest.cc',
+        'shared/root_window_event_filter_unittest.cc',
         'event_filter_unittest.cc',
         'event_unittest.cc',
         'window_unittest.cc',
         '<(SHARED_INTERMEDIATE_DIR)/ui/native_theme/native_theme_resources.rc',
         '<(SHARED_INTERMEDIATE_DIR)/ui/ui_resources/ui_resources.rc',
       ],
       'conditions': [
         # osmesa GL implementation is used on linux.
         ['OS=="linux"', {
           'dependencies': [
             '<(DEPTH)/third_party/mesa/mesa.gyp:osmesa',
           ],
         }],
       ],
     },
   ],
 }