Unify the three places that patch font loading for PDFium on Windows.

content/gpu/gpu_child_thread.h

 // Copyright (c) 2012 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_GPU_GPU_CHILD_THREAD_H_
 #define CONTENT_GPU_GPU_CHILD_THREAD_H_
 
 #include <queue>
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/command_line.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/time/time.h"
 #include "build/build_config.h"
-#include "content/child/child_thread.h"
+#include "content/child/child_thread_impl.h"
 #include "content/common/gpu/gpu_channel.h"
 #include "content/common/gpu/gpu_channel_manager.h"
 #include "content/common/gpu/gpu_config.h"
 #include "content/common/gpu/x_util.h"
 #include "gpu/config/gpu_info.h"
 #include "ui/gfx/native_widget_types.h"
 
 namespace sandbox {
 class TargetServices;
 }
 
 namespace content {
 class GpuWatchdogThread;
 
 // The main thread of the GPU child process. There will only ever be one of
 // these per process. It does process initialization and shutdown. It forwards
 // IPC messages to GpuChannelManager, which is responsible for issuing rendering
 // commands to the GPU.
-class GpuChildThread : public ChildThread {
+class GpuChildThread : public ChildThreadImpl {
  public:
   typedef std::queue<IPC::Message*> DeferredMessages;
 
   explicit GpuChildThread(GpuWatchdogThread* gpu_watchdog_thread,
                           bool dead_on_arrival,
                           const gpu::GPUInfo& gpu_info,
                           const DeferredMessages& deferred_messages);
 
   // For single-process mode.
   explicit GpuChildThread(const std::string& channel_id);
@@ skipping 47 matching lines @@
 
   // Whether the GPU thread is running in the browser process.
   bool in_browser_process_;
 
   DISALLOW_COPY_AND_ASSIGN(GpuChildThread);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_GPU_GPU_CHILD_THREAD_H_