Consuming a touch move prevents only the next scroll update.

content/browser/renderer_host/input/touch_event_queue.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_TOUCH_EVENT_QUEUE_H_
 #define CONTENT_BROWSER_RENDERER_HOST_INPUT_TOUCH_EVENT_QUEUE_H_
 
 #include <deque>
 #include <map>
 
@@ skipping 18 matching lines @@
       const TouchEventWithLatencyInfo& event) = 0;
 
   virtual void OnTouchEventAck(
       const TouchEventWithLatencyInfo& event,
       InputEventAckState ack_result) = 0;
 };
 
 // A queue for throttling and coalescing touch-events.
 class CONTENT_EXPORT TouchEventQueue {
  public:
-
   // The |client| must outlive the TouchEventQueue.
   explicit TouchEventQueue(TouchEventQueueClient* client);
   ~TouchEventQueue();
 
   // Adds an event to the queue. The event may be coalesced with previously
   // queued events (e.g. consecutive touch-move events can be coalesced into a
   // single touch-move event). The event may also be immediately forwarded to
   // the renderer (e.g. when there are no other queued touch event).
   void QueueEvent(const TouchEventWithLatencyInfo& event);
 
@@ skipping 114 matching lines @@
   // Optional suppression of TouchMove's within a slop region when a sequence
   // has not yet been preventDefaulted, disabled by default.
   scoped_ptr<TouchMoveSlopSuppressor> touchmove_slop_suppressor_;
 
   DISALLOW_COPY_AND_ASSIGN(TouchEventQueue);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_INPUT_TOUCH_EVENT_QUEUE_H_