Delegate touch handler registration logic to the TouchEventQueue

content/browser/renderer_host/input/input_router_impl.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_BROWSER_RENDERER_HOST_INPUT_INPUT_ROUTER_IMPL_H_
 #define CONTENT_BROWSER_RENDERER_HOST_INPUT_INPUT_ROUTER_IMPL_H_
 
 #include <queue>
 
 #include "base/basictypes.h"
@@ skipping 212 matching lines @@
   base::TimeTicks input_event_start_time_;
 
   // Queue of keyboard events that we need to track.
   typedef std::deque<NativeWebKeyboardEvent> KeyQueue;
 
   // A queue of keyboard events. We can't trust data from the renderer so we
   // stuff key events into a queue and pop them out on ACK, feeding our copy
   // back to whatever unhandled handler instead of the returned version.
   KeyQueue key_queue_;
 
-  // Keeps track of whether the webpage has any touch event handler. If it does,
-  // then touch events are sent to the renderer. Otherwise, the touch events are
-  // not sent to the renderer.
-  bool has_touch_handler_;
-
   // Whether touch ack timeout handling has been enabled via the command line.
   bool touch_ack_timeout_enabled_;
   size_t touch_ack_timeout_delay_ms_;
 
   // The source of the ack within the scope of |ProcessInputEventAck()|.
   // Defaults to ACK_SOURCE_NONE.
   AckSource current_ack_source_;
 
   scoped_ptr<TouchEventQueue> touch_event_queue_;
   scoped_ptr<GestureEventFilter> gesture_event_filter_;
   TouchActionFilter touch_action_filter_;
 
   DISALLOW_COPY_AND_ASSIGN(InputRouterImpl);
 };
 
 }  // namespace content
 
 #endif // CONTENT_BROWSER_RENDERER_HOST_INPUT_INPUT_ROUTER_IMPL_H_