Revert 171408

ppapi/proxy/resource_message_params.cc

 // 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.
 
 #include "ppapi/proxy/resource_message_params.h"
 
 #include "base/logging.h"
 #include "ppapi/c/pp_errors.h"
 #include "ppapi/proxy/ppapi_messages.h"
 
@@ skipping 73 matching lines @@
     size_t index,
     IPC::PlatformFileForTransit* handle) const {
   SerializedHandle serialized = TakeHandleOfTypeAtIndex(
       index, SerializedHandle::SOCKET);
   if (!serialized.is_socket())
     return false;
   *handle = serialized.descriptor();
   return true;
 }
 
-bool ResourceMessageParams::TakeFileHandleAtIndex(
-    size_t index,
-    IPC::PlatformFileForTransit* handle) const {
-  SerializedHandle serialized = TakeHandleOfTypeAtIndex(
-      index, SerializedHandle::FILE);
-  if (!serialized.is_file())
-    return false;
-  *handle = serialized.descriptor();
-  return true;
-}
-
 void ResourceMessageParams::TakeAllSharedMemoryHandles(
     std::vector<base::SharedMemoryHandle>* handles) const {
   for (size_t i = 0; i < handles_->data().size(); ++i) {
     base::SharedMemoryHandle handle;
     if (TakeSharedMemoryHandleAtIndex(i, &handle))
       handles->push_back(handle);
   }
 }
 
 void ResourceMessageParams::AppendHandle(const SerializedHandle& handle) const {
@@ skipping 47 matching lines @@
 
 bool ResourceMessageReplyParams::Deserialize(const IPC::Message* msg,
                                              PickleIterator* iter) {
   if (!ResourceMessageParams::Deserialize(msg, iter))
     return false;
   return IPC::ParamTraits<int32_t>::Read(msg, iter, &result_);
 }
 
 }  // namespace proxy
 }  // namespace ppapi