Disable the touch ack timeout for touch-action:none

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 107 matching lines @@
                        const ui::LatencyInfo& latency_info,
                        bool is_keyboard_shortcut);
 
   // IPC message handlers
   void OnInputEventAck(blink::WebInputEvent::Type event_type,
                        InputEventAckState ack_result,
                        const ui::LatencyInfo& latency_info);
   void OnMsgMoveCaretAck();
   void OnSelectRangeAck();
   void OnHasTouchEventHandlers(bool has_handlers);
-  void OnSetTouchAction(content::TouchAction touch_action);
+  void OnSetTouchAction(TouchAction touch_action);
 
   // Indicates the source of an ack provided to |ProcessInputEventAck()|.
   // The source is tracked by |current_ack_source_|, which aids in ack routing.
   enum AckSource {
     RENDERER,
     CLIENT,
     OVERSCROLL_CONTROLLER,
     IGNORING_DISPOSITION,
     ACK_SOURCE_NONE
   };
@@ skipping 28 matching lines @@
   void ProcessTouchAck(InputEventAckState ack_result,
                        const ui::LatencyInfo& latency);
 
   // Forwards |ack_result| to the client's OverscrollController, if necessary.
   void ProcessAckForOverscroll(const blink::WebInputEvent& event,
                                InputEventAckState ack_result);
 
   void SimulateTouchGestureWithMouse(
       const MouseEventWithLatencyInfo& mouse_event);
 
+  // Called when a touch timeout-affecting bit has changed, in turn toggling the
+  // touch ack timeout feature of the |touch_event_queue_| as appropriate. Input
+  // to that determination includes current view properties, the allowed touch
+  // action and the command-line configured |touch_ack_timeout_supported_|.
+  void UpdateTouchAckTimeoutEnabled();
+
   bool IsInOverscrollGesture() const;
 
   int routing_id() const { return routing_id_; }
 
 
   IPC::Sender* sender_;
   InputRouterClient* client_;
   InputAckHandler* ack_handler_;
   int routing_id_;
 
@@ skipping 38 matching lines @@
 
   // 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_;
 
   // Whether touch ack timeout handling has been enabled via the command line.
-  bool touch_ack_timeout_enabled_;
+  bool touch_ack_timeout_supported_;
   size_t touch_ack_timeout_delay_ms_;
 
+  // Cached flags from |OnViewUpdated()|, defaults to 0.
+  int current_view_flags_;
+
   // 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<GestureEventQueue> gesture_event_queue_;
   TouchActionFilter touch_action_filter_;
   InputEventStreamValidator event_stream_validator_;
 
   DISALLOW_COPY_AND_ASSIGN(InputRouterImpl);
 };
 
 }  // namespace content
 
 #endif // CONTENT_BROWSER_RENDERER_HOST_INPUT_INPUT_ROUTER_IMPL_H_