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

content/child/child_discardable_shared_memory_manager.cc

 // 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.
 
 #include "content/child/child_discardable_shared_memory_manager.h"
 
 #include "base/memory/discardable_shared_memory.h"
 #include "base/process/process_metrics.h"
-#include "content/child/child_thread.h"
 #include "content/common/child_process_messages.h"
 
 namespace content {
 namespace {
 
 // Default allocation size.
 const size_t kAllocationSize = 4 * 1024 * 1024;
 
 class DiscardableMemoryShmemChunkImpl
     : public base::DiscardableMemoryShmemChunk {
@@ skipping 157 matching lines @@
   sender_->Send(
       new ChildProcessHostMsg_SyncAllocateLockedDiscardableSharedMemory(
           size, &handle));
   scoped_ptr<base::DiscardableSharedMemory> memory(
       new base::DiscardableSharedMemory(handle));
   CHECK(memory->Map(size));
   return memory.Pass();
 }
 
 }  // namespace content