components: Cleanup class/struct fwd declarations

components/nacl/loader/nacl_ipc_adapter.h

 // Copyright 2013 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 COMPONENTS_NACL_LOADER_NACL_IPC_ADAPTER_H_
 #define COMPONENTS_NACL_LOADER_NACL_IPC_ADAPTER_H_
 
 #include <stddef.h>
 
 #include <map>
@@ skipping 11 matching lines @@
 #include "base/synchronization/lock.h"
 #include "base/task_runner.h"
 #include "build/build_config.h"
 #include "ipc/ipc_listener.h"
 #include "ipc/ipc_platform_file.h"
 #include "ppapi/c/pp_stdint.h"
 #include "ppapi/proxy/nacl_message_scanner.h"
 
 struct NaClDesc;
 struct NaClImcTypedMsgHdr;
-struct PP_Size;
 
 namespace base {
 class SingleThreadTaskRunner;
 }
 
 namespace IPC {
 class Channel;
 struct ChannelHandle;
 }
 
-namespace ppapi {
-class HostResource;
-}
-
 // Adapts a Chrome IPC channel to an IPC channel that we expose to Native
 // Client. This provides a mapping in both directions, so when IPC messages
 // come in from another process, we rewrite them and allow them to be received
 // via a recvmsg-like interface in the NaCl code. When NaCl code calls sendmsg,
 // we implement that as sending IPC messages on the channel.
 //
 // This object also provides the necessary logic for rewriting IPC messages.
 // NaCl code is platform-independent and runs in a Posix-like enviroment, but
 // some formatting in the message and the way handles are transferred varies
 // by platform. This class bridges that gap to provide what looks like a
@@ skipping 174 matching lines @@
   // To be accessed on the I/O thread (via task runner) only.
   IOThreadData io_thread_data_;
 
   DISALLOW_COPY_AND_ASSIGN(NaClIPCAdapter);
 };
 
 // Export TranslatePepperFileReadWriteOpenFlags for testing.
 int TranslatePepperFileReadWriteOpenFlagsForTesting(int32_t pp_open_flags);
 
 #endif  // COMPONENTS_NACL_LOADER_NACL_IPC_ADAPTER_H_