Pass around IPC::ChannelHandles instead of raw fds in the NaCl IRT.

components/nacl/loader/nonsfi/nonsfi_listener.cc

Index: components/nacl/loader/nonsfi/nonsfi_listener.cc
diff --git a/components/nacl/loader/nonsfi/nonsfi_listener.cc b/components/nacl/loader/nonsfi/nonsfi_listener.cc
index 2ea4d5988cb5588c5f59892783202fabfd062ea6..3ee8aa096384f2961030b0464e7b1fa6866b8a73 100644
--- a/components/nacl/loader/nonsfi/nonsfi_listener.cc
+++ b/components/nacl/loader/nonsfi/nonsfi_listener.cc
@@ -92,10 +92,10 @@ void NonSfiListener::OnStart(const nacl::NaClStartParams& params) {
   CHECK_NE(params.trusted_service_channel_handle.socket.fd, -1);
   CHECK_NE(params.manifest_service_channel_handle.socket.fd, -1);
 
-  ppapi::SetIPCFileDescriptors(
-      params.ppapi_browser_channel_handle.socket.fd,
-      params.ppapi_renderer_channel_handle.socket.fd,
-      params.manifest_service_channel_handle.socket.fd);
+  ppapi::SetIPCChannelHandles(
+      params.ppapi_browser_channel_handle,
+      params.ppapi_renderer_channel_handle,
+      params.manifest_service_channel_handle);
   ppapi::StartUpPlugin();
 
   // TODO(teravest): Do we plan on using this renderer handle for nexe loading