Remove some PlatformFile uses from NaCl.

components/nacl/browser/nacl_process_host.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 "components/nacl/browser/nacl_process_host.h"
 
 #include <algorithm>
 #include <string>
 #include <vector>
 
@@ skipping 850 matching lines @@
 }
 
 void NaClProcessHost::OnSetKnownToValidate(const std::string& signature) {
   NaClBrowser::GetInstance()->SetKnownToValidate(
       signature, off_the_record_);
 }
 
 void NaClProcessHost::FileResolved(
     const base::FilePath& file_path,
     IPC::Message* reply_msg,
-    const base::PlatformFile& file) {
-  if (file != base::kInvalidPlatformFileValue) {
-    IPC::PlatformFileForTransit handle = IPC::GetFileHandleForProcess(
-        file,
-        process_->GetData().handle,
-        true /* close_source */);
+    base::File file) {
+  if (file.IsValid()) {
+    IPC::PlatformFileForTransit handle = IPC::TakeFileHandleForProcess(
+        file.Pass(),
+        process_->GetData().handle);
     NaClProcessMsg_ResolveFileToken::WriteReplyParams(
         reply_msg,
         handle,
         file_path);
   } else {
     NaClProcessMsg_ResolveFileToken::WriteReplyParams(
         reply_msg,
         IPC::InvalidPlatformFileForTransit(),
         base::FilePath());
   }
@@ skipping 118 matching lines @@
         process_handle.Take(), info,
         base::MessageLoopProxy::current(),
         base::Bind(&NaClProcessHost::OnDebugExceptionHandlerLaunchedByBroker,
                    weak_factory_.GetWeakPtr()));
     return true;
   }
 }
 #endif
 
 }  // namespace nacl