gesture recognizer: Remove the touch-event queue.

ui/base/gestures/gesture_sequence.cc

 // 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.
 
 #include "ui/base/gestures/gesture_sequence.h"
 
 #include <cmath>
 
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 292 matching lines @@
 }
 
 GestureSequence::~GestureSequence() {
 }
 
 GestureSequence::Gestures* GestureSequence::ProcessTouchEventForGesture(
     const TouchEvent& event,
     EventResult result) {
   StopLongPressTimerIfRequired(event);
   last_touch_location_ = event.location();
-  if (result & ER_ASYNC)
+  if (result & ER_CONSUMED)
     return NULL;
 
   // Set a limit on the number of simultaneous touches in a gesture.
   if (event.touch_id() >= kMaxGesturePoints)
     return NULL;
 
   if (event.type() == ui::ET_TOUCH_PRESSED) {
     if (point_count_ == kMaxGesturePoints)
       return NULL;
     GesturePoint* new_point = &points_[event.touch_id()];
@@ skipping 19 matching lines @@
   RecreateBoundingBox();
   flags_ = event.flags();
   const int point_id = point.point_id();
   if (point_id < 0)
     return NULL;
 
   // Send GESTURE_BEGIN for any touch pressed.
   if (event.type() == ui::ET_TOUCH_PRESSED)
     AppendBeginGestureEvent(point, gestures.get());
 
-  CHECK_NE(ER_ASYNC, result);
   TouchStatusInternal status_internal = (result == ER_UNHANDLED) ?
       TSI_NOT_PROCESSED : TSI_PROCESSED;
 
   EdgeStateSignatureType signature = Signature(state_, point_id,
       event.type(), status_internal);
 
   if (signature == GST_INVALID)
     signature = Signature(state_, point_id, event.type(), TSI_ALWAYS);
 
   switch (signature) {
@@ skipping 717 matching lines @@
     return;
 
   // Since long press timer has been started, there should be a non-NULL point.
   const GesturePoint* point = GetPointByPointId(0);
   if (!ui::gestures::IsInsideManhattanSquare(point->first_touch_position(),
       event.location()))
     long_press_timer_->Stop();
 }
 
 }  // namespace ui