Fix crash in Mac ASAN RenderWidgetResizeHelper

content/browser/renderer_host/render_widget_resize_helper.h

 // 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.
 
 #ifndef CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_RESIZE_HELPER_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_RESIZE_HELPER_H_
 
 #include <deque>
 
 #include "base/lazy_instance.h"
@@ skipping 64 matching lines @@
   ~RenderWidgetResizeHelper();
 
   // A classed used to wrap an IPC or a task.
   class EnqueuedTask;
   friend class EnqueuedTask;
 
   // Called on the IO thread to add a task to the queue.
   void PostEnqueuedTask(EnqueuedTask* proxy);
 
   // Called on the UI to remove the task from the queue when it is run.
-  void WillRunEnqueuedTask(EnqueuedTask* proxy);
+  void RemoveEnqueuedTaskFromQueue(EnqueuedTask* proxy);
 
-  // A queue of live messages.  Must hold |task_queue_lock_| to access.
-  // The EnqueuedTask objects are removed from the front of the queue when
-  // they are run (either by TaskRunner they were posted to or by a call to
-  // WaitForSingleTaskToRun pulling them off of the queue).
+  // A queue of live messages.  Must hold |task_queue_lock_| to access. Tasks
+  // are added only on the IO thread and removed only on the UI thread.  The
+  // EnqueuedTask objects are removed from the front of the queue when they are
+  // run (by TaskRunner they were posted to, by a call to WaitForSingleTaskToRun
+  // pulling them off of the queue, or by TaskRunner when it is destroyed).
   typedef std::deque<EnqueuedTask*> EnqueuedTaskQueue;
   EnqueuedTaskQueue task_queue_;
   base::Lock task_queue_lock_;
 
   // Event used to wake up the UI thread if it is sleeping in
   // WaitForSingleTaskToRun.
   base::WaitableEvent event_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_RESIZE_HELPER_H_