Automated IWYU fix for TaskRunner includes.

content/browser/compositor/software_browser_compositor_output_surface.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_COMPOSITOR_SOFTWARE_BROWSER_COMPOSITOR_OUTPUT_SURFACE_H_
 #define CONTENT_BROWSER_COMPOSITOR_SOFTWARE_BROWSER_COMPOSITOR_OUTPUT_SURFACE_H_
 
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
+#include "base/single_thread_task_runner.h"
 #include "build/build_config.h"
 #include "content/browser/compositor/browser_compositor_output_surface.h"
 #include "content/common/content_export.h"
 
 namespace cc {
 class SoftwareOutputDevice;
 }
 
 namespace content {
 
@@ skipping 35 matching lines @@
   cc::OutputSurfaceClient* client_ = nullptr;
   scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
   base::WeakPtrFactory<SoftwareBrowserCompositorOutputSurface> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(SoftwareBrowserCompositorOutputSurface);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_COMPOSITOR_SOFTWARE_BROWSER_COMPOSITOR_OUTPUT_SURFACE_H_