Prepare SyntheticPointerAction to handle touch actions for multiple fingers

content/content_browser.gypi

 # 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.
 
 {
   'dependencies': [
     '../base/base.gyp:base_static',
     '../cc/cc.gyp:cc',
     '../cc/cc.gyp:cc_surfaces',
     '../components/components.gyp:display_compositor',
@@ skipping 1241 matching lines @@
       'browser/renderer_host/input/synthetic_gesture_target_mac.h',
       'browser/renderer_host/input/synthetic_gesture_target_mac.mm',
       'browser/renderer_host/input/synthetic_mouse_pointer.cc',
       'browser/renderer_host/input/synthetic_mouse_pointer.h',
       'browser/renderer_host/input/synthetic_pinch_gesture.cc',
       'browser/renderer_host/input/synthetic_pinch_gesture.h',
       'browser/renderer_host/input/synthetic_pointer.cc',
       'browser/renderer_host/input/synthetic_pointer.h',
       'browser/renderer_host/input/synthetic_pointer_action.cc',
       'browser/renderer_host/input/synthetic_pointer_action.h',
+      'browser/renderer_host/input/synthetic_pointer_action_controller.cc',
+      'browser/renderer_host/input/synthetic_pointer_action_controller.h',
       'browser/renderer_host/input/synthetic_smooth_drag_gesture.cc',
       'browser/renderer_host/input/synthetic_smooth_drag_gesture.h',
       'browser/renderer_host/input/synthetic_smooth_move_gesture.cc',
       'browser/renderer_host/input/synthetic_smooth_move_gesture.h',
       'browser/renderer_host/input/synthetic_smooth_scroll_gesture.cc',
       'browser/renderer_host/input/synthetic_smooth_scroll_gesture.h',
       'browser/renderer_host/input/synthetic_tap_gesture.cc',
       'browser/renderer_host/input/synthetic_tap_gesture.h',
       'browser/renderer_host/input/synthetic_touch_pointer.cc',
       'browser/renderer_host/input/synthetic_touch_pointer.h',
@@ skipping 932 matching lines @@
       ],
     }],
     ['OS != "mac" and OS != "android"', {
       'sources!': [
         'browser/gpu/gpu_surface_tracker.cc',
         'browser/gpu/gpu_surface_tracker.h',
       ],
     }],
   ],
 }