Merge definitions of PlatformFileToInt and IntToPlatformFile to one place.

ppapi/proxy/ppb_audio_proxy.cc

 // Copyright (c) 2011 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 "ppapi/proxy/ppb_audio_proxy.h"
 
 #include "base/compiler_specific.h"
 #include "base/threading/simple_thread.h"
 #include "ppapi/c/pp_errors.h"
 #include "ppapi/c/ppb_audio.h"
@@ skipping 97 matching lines @@
 }
 
 int32_t Audio::GetSyncSocket(int* sync_socket) {
   return PP_ERROR_NOTSUPPORTED;  // Don't proxy the trusted interface.
 }
 
 int32_t Audio::GetSharedMemory(int* shm_handle, uint32_t* shm_size) {
   return PP_ERROR_NOTSUPPORTED;  // Don't proxy the trusted interface.
 }
 
-namespace {
-
-base::PlatformFile IntToPlatformFile(int32_t handle) {
-  // TODO(piman/brettw): Change trusted interface to return a PP_FileHandle,
-  // those casts are ugly.
-#if defined(OS_WIN)
-  return reinterpret_cast<HANDLE>(static_cast<intptr_t>(handle));
-#elif defined(OS_POSIX)
-  return handle;
-#else
-  #error Not implemented.
-#endif
-}
-
-}  // namespace
-
 PPB_Audio_Proxy::PPB_Audio_Proxy(Dispatcher* dispatcher)
     : InterfaceProxy(dispatcher),
       callback_factory_(ALLOW_THIS_IN_INITIALIZER_LIST(this)) {
 }
 
 PPB_Audio_Proxy::~PPB_Audio_Proxy() {
 }
 
 // static
 PP_Resource PPB_Audio_Proxy::CreateProxyResource(
@@ skipping 176 matching lines @@
   *foreign_shared_memory_handle = dispatcher()->ShareHandleWithRemote(
       IntToPlatformFile(shared_memory_handle), false);
   if (*foreign_shared_memory_handle == IPC::InvalidPlatformFileForTransit())
     return PP_ERROR_FAILED;
 
   return PP_OK;
 }
 
 }  // namespace proxy
 }  // namespace ppapi