CL for src perf tryjob to run smoothness.scrolling_tough_ad_cases benchmark on android-nexus5X plat…

content/browser/renderer_host/input/gesture_event_queue.cc

 // Copyright 2014 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 "content/browser/renderer_host/input/gesture_event_queue.h"
 
 #include "base/trace_event/trace_event.h"
 #include "content/browser/renderer_host/input/touchpad_tap_suppression_controller.h"
 #include "content/browser/renderer_host/input/touchscreen_tap_suppression_controller.h"
 #include "ui/events/blink/web_input_event_traits.h"
@@ skipping 69 matching lines @@
 GestureEventQueue::~GestureEventQueue() { }
 
 void GestureEventQueue::QueueEvent(
     const GestureEventWithLatencyInfo& gesture_event) {
   TRACE_EVENT0("input", "GestureEventQueue::QueueEvent");
   if (!ShouldForwardForBounceReduction(gesture_event) ||
       !ShouldForwardForGFCFiltering(gesture_event) ||
       !ShouldForwardForTapSuppression(gesture_event)) {
     return;
   }
-
   QueueAndForwardIfNecessary(gesture_event);
 }
 
 bool GestureEventQueue::ShouldDiscardFlingCancelEvent(
     const GestureEventWithLatencyInfo& gesture_event) const {
   if (coalesced_gesture_events_.empty() && fling_in_progress_)
     return false;
   GestureQueue::const_reverse_iterator it =
       coalesced_gesture_events_.rbegin();
   while (it != coalesced_gesture_events_.rend()) {
@@ skipping 198 matching lines @@
     const GestureEventWithLatencyInfo& gesture_event) {
   QueueAndForwardIfNecessary(gesture_event);
 }
 
 void GestureEventQueue::SendScrollEndingEventsNow() {
   scrolling_in_progress_ = false;
   if (debouncing_deferral_queue_.empty())
     return;
   GestureQueue debouncing_deferral_queue;
   debouncing_deferral_queue.swap(debouncing_deferral_queue_);
-  for (GestureQueue::const_iterator it = debouncing_deferral_queue.begin();
+  for (GestureQueue::iterator it = debouncing_deferral_queue.begin();
        it != debouncing_deferral_queue.end(); it++) {
     if (ShouldForwardForGFCFiltering(*it) &&
         ShouldForwardForTapSuppression(*it)) {
+      if (it->event.type == WebInputEvent::GestureScrollEnd &&
+          it < debouncing_deferral_queue.end() - 1 &&
+          (it + 1)->event.type == WebInputEvent::GestureFlingStart) {
+        it->event.data.scrollEnd.flingMightHappenNext = true;
+      }
       QueueAndForwardIfNecessary(*it);
     }
   }
 }
 
 void GestureEventQueue::QueueScrollOrPinchAndForwardIfNecessary(
     const GestureEventWithLatencyInfo& gesture_event) {
   DCHECK_GE(coalesced_gesture_events_.size(), EventsInFlightCount());
   const size_t unsent_events_count =
       coalesced_gesture_events_.size() - EventsInFlightCount();
@@ skipping 88 matching lines @@
     return 0;
 
   if (!ignore_next_ack_)
     return 1;
 
   DCHECK_GT(coalesced_gesture_events_.size(), 1U);
   return 2;
 }
 
 }  // namespace content