Use ChannelMojo for Browser-GPU and Renderer-GPU IPC.

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 176 matching lines @@
   DCHECK(content::RenderThread::Get());
   content::RendererPpapiHost* host =
       content::RendererPpapiHost::GetForPPInstance(instance);
   if (!host)
     return 0;
   return host->GetRoutingIDForWidget(instance);
 }
 
 // Returns whether the channel_handle is valid or not.
 bool IsValidChannelHandle(const IPC::ChannelHandle& channel_handle) {
-  if (channel_handle.name.empty()) {
-    return false;
-  }
-
-#if defined(OS_POSIX)
-  if (channel_handle.socket.fd == -1) {
-    return false;
-  }
-#endif
-
-  return true;
+  return channel_handle.mojo_handle.is_valid();
 }
 
 void PostPPCompletionCallback(PP_CompletionCallback callback,
                               int32_t status) {
   ppapi::PpapiGlobals::Get()->GetMainThreadMessageLoop()->PostTask(
       FROM_HERE,
       base::Bind(callback.func, callback.user_data, status));
 }
 
 bool ManifestResolveKey(PP_Instance instance,
@@ skipping 1528 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