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

content/child/child_thread.h

Index: content/child/child_thread.h
diff --git a/content/child/child_thread.h b/content/child/child_thread.h
deleted file mode 100644
index 24cfc61f22cbbaf37a51e700b1764c09dee9240b..0000000000000000000000000000000000000000
--- a/content/child/child_thread.h
+++ /dev/null
@@ -1,302 +0,0 @@
-// 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_CHILD_CHILD_THREAD_H_
-#define CONTENT_CHILD_CHILD_THREAD_H_
-
-#include <string>
-
-#include "base/basictypes.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/memory/shared_memory.h"
-#include "base/memory/weak_ptr.h"
-#include "base/power_monitor/power_monitor.h"
-#include "base/tracked_objects.h"
-#include "content/child/mojo/mojo_application.h"
-#include "content/common/content_export.h"
-#include "content/common/message_router.h"
-#include "ipc/ipc_message.h"  // For IPC_MESSAGE_LOG_ENABLED.
-
-namespace base {
-class MessageLoop;
-
-namespace debug {
-class TraceMemoryController;
-}  // namespace debug
-}  // namespace base
-
-namespace IPC {
-class MessageFilter;
-class SyncChannel;
-class SyncMessageFilter;
-}  // namespace IPC
-
-namespace blink {
-class WebFrame;
-}  // namespace blink
-
-namespace content {
-class BluetoothMessageFilter;
-class ChildDiscardableSharedMemoryManager;
-class ChildGpuMemoryBufferManager;
-class ChildHistogramMessageFilter;
-class ChildResourceMessageFilter;
-class ChildSharedBitmapManager;
-class FileSystemDispatcher;
-class GeofencingMessageFilter;
-class NavigatorConnectDispatcher;
-class NotificationDispatcher;
-class PushDispatcher;
-class ServiceWorkerMessageFilter;
-class QuotaDispatcher;
-class QuotaMessageFilter;
-class ResourceDispatcher;
-class ThreadSafeSender;
-class WebSocketDispatcher;
-struct RequestInfo;
-
-// The main thread of a child process derives from this class.
-class CONTENT_EXPORT ChildThread : public IPC::Listener, public IPC::Sender {
- public:
-  struct CONTENT_EXPORT Options {
-    Options();
-    explicit Options(bool mojo);
-    Options(std::string name, bool mojo);
-    ~Options();
-
-    std::string channel_name;
-    bool use_mojo_channel;
-    bool in_browser_process;
-    std::vector<IPC::MessageFilter*> startup_filters;
-  };
-
-  // Creates the thread.
-  ChildThread();
-  // Allow to be used for single-process mode and for in process gpu mode via
-  // options.
-  explicit ChildThread(const Options& options);
-  // ChildProcess::main_thread() is reset after Shutdown(), and before the
-  // destructor, so any subsystem that relies on ChildProcess::main_thread()
-  // must be terminated before Shutdown returns. In particular, if a subsystem
-  // has a thread that post tasks to ChildProcess::main_thread(), that thread
-  // should be joined in Shutdown().
-  ~ChildThread() override;
-  virtual void Shutdown();
-
-  // IPC::Sender implementation:
-  bool Send(IPC::Message* msg) override;
-
-  IPC::SyncChannel* channel() { return channel_.get(); }
-
-  MessageRouter* GetRouter();
-
-  // Allocates a block of shared memory of the given size. Returns NULL on
-  // failure.
-  // Note: On posix, this requires a sync IPC to the browser process,
-  // but on windows the child process directly allocates the block.
-  scoped_ptr<base::SharedMemory> AllocateSharedMemory(size_t buf_size);
-
-  // A static variant that can be called on background threads provided
-  // the |sender| passed in is safe to use on background threads.
-  static scoped_ptr<base::SharedMemory> AllocateSharedMemory(
-      size_t buf_size,
-      IPC::Sender* sender);
-
-  ChildSharedBitmapManager* shared_bitmap_manager() const {
-    return shared_bitmap_manager_.get();
-  }
-
-  ChildGpuMemoryBufferManager* gpu_memory_buffer_manager() const {
-    return gpu_memory_buffer_manager_.get();
-  }
-
-  ChildDiscardableSharedMemoryManager* discardable_shared_memory_manager()
-      const {
-    return discardable_shared_memory_manager_.get();
-  }
-
-  ResourceDispatcher* resource_dispatcher() const {
-    return resource_dispatcher_.get();
-  }
-
-  WebSocketDispatcher* websocket_dispatcher() const {
-    return websocket_dispatcher_.get();
-  }
-
-  FileSystemDispatcher* file_system_dispatcher() const {
-    return file_system_dispatcher_.get();
-  }
-
-  QuotaDispatcher* quota_dispatcher() const {
-    return quota_dispatcher_.get();
-  }
-
-  NotificationDispatcher* notification_dispatcher() const {
-    return notification_dispatcher_.get();
-  }
-
-  PushDispatcher* push_dispatcher() const {
-    return push_dispatcher_.get();
-  }
-
-  IPC::SyncMessageFilter* sync_message_filter() const {
-    return sync_message_filter_.get();
-  }
-
-  // The getter should only be called on the main thread, however the
-  // IPC::Sender it returns may be safely called on any thread including
-  // the main thread.
-  ThreadSafeSender* thread_safe_sender() const {
-    return thread_safe_sender_.get();
-  }
-
-  ChildHistogramMessageFilter* child_histogram_message_filter() const {
-    return histogram_message_filter_.get();
-  }
-
-  ServiceWorkerMessageFilter* service_worker_message_filter() const {
-    return service_worker_message_filter_.get();
-  }
-
-  QuotaMessageFilter* quota_message_filter() const {
-    return quota_message_filter_.get();
-  }
-
-  ChildResourceMessageFilter* child_resource_message_filter() const {
-    return resource_message_filter_.get();
-  }
-
-  base::MessageLoop* message_loop() const { return message_loop_; }
-
-  // Returns the one child thread. Can only be called on the main thread.
-  static ChildThread* current();
-
-#if defined(OS_ANDROID)
-  // Called on Android's service thread to shutdown the main thread of this
-  // process.
-  static void ShutdownThread();
-#endif
-
-  ServiceRegistry* service_registry() const {
-    return mojo_application_->service_registry();
-  }
-
- protected:
-  friend class ChildProcess;
-
-  // Called when the process refcount is 0.
-  void OnProcessFinalRelease();
-
-  virtual bool OnControlMessageReceived(const IPC::Message& msg);
-
-  void set_on_channel_error_called(bool on_channel_error_called) {
-    on_channel_error_called_ = on_channel_error_called;
-  }
-
-  // IPC::Listener implementation:
-  bool OnMessageReceived(const IPC::Message& msg) override;
-  void OnChannelConnected(int32 peer_pid) override;
-  void OnChannelError() override;
-
- private:
-  class ChildThreadMessageRouter : public MessageRouter {
-   public:
-    // |sender| must outlive this object.
-    explicit ChildThreadMessageRouter(IPC::Sender* sender);
-    bool Send(IPC::Message* msg) override;
-
-   private:
-    IPC::Sender* const sender_;
-  };
-
-  void Init(const Options& options);
-
-  // We create the channel first without connecting it so we can add filters
-  // prior to any messages being received, then connect it afterwards.
-  void ConnectChannel(bool use_mojo_channel);
-
-  // IPC message handlers.
-  void OnShutdown();
-  void OnSetProfilerStatus(tracked_objects::ThreadData::Status status);
-  void OnGetChildProfilerData(int sequence_number);
-  void OnDumpHandles();
-  void OnProcessBackgrounded(bool background);
-#ifdef IPC_MESSAGE_LOG_ENABLED
-  void OnSetIPCLoggingEnabled(bool enable);
-#endif
-#if defined(USE_TCMALLOC)
-  void OnGetTcmallocStats();
-#endif
-
-  void EnsureConnected();
-
-  scoped_ptr<MojoApplication> mojo_application_;
-
-  std::string channel_name_;
-  scoped_ptr<IPC::SyncChannel> channel_;
-
-  // Allows threads other than the main thread to send sync messages.
-  scoped_refptr<IPC::SyncMessageFilter> sync_message_filter_;
-
-  scoped_refptr<ThreadSafeSender> thread_safe_sender_;
-
-  // Implements message routing functionality to the consumers of ChildThread.
-  ChildThreadMessageRouter router_;
-
-  // Handles resource loads for this process.
-  scoped_ptr<ResourceDispatcher> resource_dispatcher_;
-
-  scoped_ptr<WebSocketDispatcher> websocket_dispatcher_;
-
-  // The OnChannelError() callback was invoked - the channel is dead, don't
-  // attempt to communicate.
-  bool on_channel_error_called_;
-
-  base::MessageLoop* message_loop_;
-
-  scoped_ptr<FileSystemDispatcher> file_system_dispatcher_;
-
-  scoped_ptr<QuotaDispatcher> quota_dispatcher_;
-
-  scoped_refptr<ChildHistogramMessageFilter> histogram_message_filter_;
-
-  scoped_refptr<ChildResourceMessageFilter> resource_message_filter_;
-
-  scoped_refptr<ServiceWorkerMessageFilter> service_worker_message_filter_;
-
-  scoped_refptr<QuotaMessageFilter> quota_message_filter_;
-
-  scoped_refptr<NotificationDispatcher> notification_dispatcher_;
-
-  scoped_refptr<PushDispatcher> push_dispatcher_;
-
-  scoped_ptr<ChildSharedBitmapManager> shared_bitmap_manager_;
-
-  scoped_ptr<ChildGpuMemoryBufferManager> gpu_memory_buffer_manager_;
-
-  scoped_ptr<ChildDiscardableSharedMemoryManager>
-      discardable_shared_memory_manager_;
-
-  // Observes the trace event system. When tracing is enabled, optionally
-  // starts profiling the tcmalloc heap.
-  scoped_ptr<base::debug::TraceMemoryController> trace_memory_controller_;
-
-  scoped_ptr<base::PowerMonitor> power_monitor_;
-
-  scoped_refptr<GeofencingMessageFilter> geofencing_message_filter_;
-
-  scoped_refptr<BluetoothMessageFilter> bluetooth_message_filter_;
-
-  scoped_refptr<NavigatorConnectDispatcher> navigator_connect_dispatcher_;
-
-  bool in_browser_process_;
-
-  base::WeakPtrFactory<ChildThread> channel_connected_factory_;
-
-  DISALLOW_COPY_AND_ASSIGN(ChildThread);
-};
-
-}  // namespace content
-
-#endif  // CONTENT_CHILD_CHILD_THREAD_H_