Don't restart the hang renderer timeout on messages ack'd from the compositor thread.

content/browser/renderer_host/input/input_router_impl_unittest.cc

 // 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.
 
 #include "content/browser/renderer_host/input/input_router_impl.h"
 
 #include <math.h>
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 268 matching lines @@
     touch_event_.ReleasePoint(index);
   }
 
   void CancelTouchPoint(int index) {
     touch_event_.CancelPoint(index);
   }
 
   void SendInputEventACK(blink::WebInputEvent::Type type,
                          InputEventAckState ack_result) {
     DCHECK(!WebInputEvent::isTouchEventType(type));
-    InputEventAck ack(type, ack_result);
+    InputEventAck ack(InputEventAckSource::COMPOSITOR_THREAD, type, ack_result);
     input_router_->OnMessageReceived(InputHostMsg_HandleInputEvent_ACK(0, ack));
   }
 
   void SendTouchEventACK(blink::WebInputEvent::Type type,
                          InputEventAckState ack_result,
                          uint32_t touch_event_id) {
     DCHECK(WebInputEvent::isTouchEventType(type));
-    InputEventAck ack(type, ack_result, touch_event_id);
+    InputEventAck ack(InputEventAckSource::COMPOSITOR_THREAD, type, ack_result,
+                      touch_event_id);
     input_router_->OnMessageReceived(InputHostMsg_HandleInputEvent_ACK(0, ack));
   }
 
   InputRouterImpl* input_router() const {
     return input_router_.get();
   }
 
   bool TouchEventQueueEmpty() const {
     return input_router()->touch_event_queue_.empty();
   }
@@ skipping 1500 matching lines @@
             client_overscroll.latest_overscroll_delta);
   EXPECT_EQ(overscroll.current_fling_velocity,
             client_overscroll.current_fling_velocity);
 
   DidOverscrollParams wheel_overscroll;
   wheel_overscroll.accumulated_overscroll = gfx::Vector2dF(7, -7);
   wheel_overscroll.latest_overscroll_delta = gfx::Vector2dF(3, 0);
   wheel_overscroll.current_fling_velocity = gfx::Vector2dF(1, 0);
 
   SimulateWheelEvent(0, 0, 3, 0, 0, false);
-  InputEventAck ack(WebInputEvent::MouseWheel,
+  InputEventAck ack(InputEventAckSource::COMPOSITOR_THREAD,
+                    WebInputEvent::MouseWheel,
                     INPUT_EVENT_ACK_STATE_NOT_CONSUMED);
   ack.overscroll.reset(new DidOverscrollParams(wheel_overscroll));
   input_router_->OnMessageReceived(InputHostMsg_HandleInputEvent_ACK(0, ack));
 
   client_overscroll = client_->GetAndResetOverscroll();
   EXPECT_EQ(wheel_overscroll.accumulated_overscroll,
             client_overscroll.accumulated_overscroll);
   EXPECT_EQ(wheel_overscroll.latest_overscroll_delta,
             client_overscroll.latest_overscroll_delta);
   EXPECT_EQ(wheel_overscroll.current_fling_velocity,
@@ skipping 450 matching lines @@
   EXPECT_EQ(80, sent_event->data.flingStart.velocityY);
 
   const WebGestureEvent* filter_event =
       GetFilterWebInputEvent<WebGestureEvent>();
   TestLocationInFilterEvent(filter_event, orig);
   EXPECT_EQ(30, filter_event->data.flingStart.velocityX);
   EXPECT_EQ(40, filter_event->data.flingStart.velocityY);
 }
 
 }  // namespace content