[M51] Fix build with merge problem of change refs/branch-heads/2704@{#181}

content/browser/renderer_host/input/input_router_impl.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 <utility>
 
 #include "base/auto_reset.h"
@@ skipping 356 matching lines @@
 
   if (OfferToClient(input_event, latency_info))
     return;
 
   bool should_block = WebInputEventTraits::ShouldBlockEventStream(input_event);
   OfferToRenderer(input_event, latency_info,
                   should_block
                       ? InputEventDispatchType::DISPATCH_TYPE_BLOCKING
                       : InputEventDispatchType::DISPATCH_TYPE_NON_BLOCKING);
 
-  if (WebInputEvent::isTouchEventType(input_event.type) &&
-      input_event.type != WebInputEvent::TouchMove) {
-    const WebTouchEvent& touch = static_cast<const WebTouchEvent&>(input_event);
-    DCHECK_EQ(should_block, touch.cancelable);
-  }
-
   // Generate a synthetic ack if the event was sent so it doesn't block.
   if (!should_block) {
     ProcessInputEventAck(
         input_event.type, INPUT_EVENT_ACK_STATE_IGNORED, latency_info,
         WebInputEventTraits::GetUniqueTouchEventId(input_event),
         IGNORING_DISPOSITION);
   }
 }
 
 bool InputRouterImpl::OfferToClient(const WebInputEvent& input_event,
@@ skipping 246 matching lines @@
 
   flush_requested_ = false;
   client_->DidFlush();
 }
 
 void InputRouterImpl::SetFrameTreeNodeId(int frameTreeNodeId) {
   frame_tree_node_id_ = frameTreeNodeId;
 }
 
 }  // namespace content