Use ChannelMojo for plugin-renderer channels.

components/nacl/renderer/ppb_nacl_private_impl.cc

 // 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.
 
 #include "components/nacl/renderer/ppb_nacl_private.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <memory>
@@ skipping 112 matching lines @@
   base::ProcessId plugin_pid;
   int plugin_child_id;
   IPC::ChannelHandle channel_handle;
 };
 
 class NaClPluginInstance {
  public:
   explicit NaClPluginInstance(PP_Instance instance)
       : nexe_load_manager(instance), pexe_size(0) {}
   ~NaClPluginInstance() {
-    // Make sure that we do not leak a file descriptor if the NaCl loader
+    // Make sure that we do not leak a mojo handle if the NaCl loader
     // process never called ppapi_start() to initialize PPAPI.
     if (instance_info) {
-#if defined(OS_WIN)
-      base::win::ScopedHandle closer(instance_info->channel_handle.pipe.handle);
-#else
-      base::ScopedFD closer(instance_info->channel_handle.socket.fd);
-#endif
+      DCHECK(instance_info->channel_handle.is_mojo_channel_handle());
+      instance_info->channel_handle.mojo_handle.Close();
     }
   }
 
   NexeLoadManager nexe_load_manager;
   std::unique_ptr<JsonManifest> json_manifest;
   std::unique_ptr<InstanceInfo> instance_info;
 
   // When translation is complete, this records the size of the pexe in
   // bytes so that it can be reported in a later load event.
   uint64_t pexe_size;
@@ skipping 1584 matching lines @@
   // Mark the request as requesting a PNaCl bitcode file,
   // so that component updater can detect this user action.
   url_request.addHTTPHeaderField(
       blink::WebString::fromUTF8("Accept"),
       blink::WebString::fromUTF8("application/x-pnacl, */*"));
   url_request.setRequestContext(blink::WebURLRequest::RequestContextObject);
   downloader->Load(url_request);
 }
 
 }  // namespace nacl