Use ChannelMojo for NaCl PPAPI channels.

components/nacl/loader/nacl_ipc_adapter.h

Index: components/nacl/loader/nacl_ipc_adapter.h
diff --git a/components/nacl/loader/nacl_ipc_adapter.h b/components/nacl/loader/nacl_ipc_adapter.h
index 28e328feda3eea915b6fa1d0721b9e943fccb9f9..b6d07a31c21717f094ed618bd2fce3b0b22f363e 100644
--- a/components/nacl/loader/nacl_ipc_adapter.h
+++ b/components/nacl/loader/nacl_ipc_adapter.h
@@ -31,6 +31,10 @@ struct NaClDesc;
 struct NaClImcTypedMsgHdr;
 struct PP_Size;
 
+namespace base {
+class SingleThreadTaskRunner;
+}
+
 namespace IPC {
 class Channel;
 struct ChannelHandle;
@@ -105,11 +109,10 @@ class NaClIPCAdapter : public base::RefCountedThreadSafe<NaClIPCAdapter>,
   // |open_resource_cb| may immediately call a OpenResourceReplyCallback
   // function to send a pre-opened resource descriptor to the untrusted side.
   // OpenResourceCallback returns true when OpenResourceReplyCallback is called.
-  NaClIPCAdapter(
-      const IPC::ChannelHandle& handle,
-      base::TaskRunner* runner,
-      ResolveFileTokenCallback resolve_file_token_cb,
-      OpenResourceCallback open_resource_cb);
+  NaClIPCAdapter(const IPC::ChannelHandle& handle,
+                 const scoped_refptr<base::SingleThreadTaskRunner>& runner,
+                 ResolveFileTokenCallback resolve_file_token_cb,
+                 OpenResourceCallback open_resource_cb);
 
   // Initializes with a given channel that's already created for testing
   // purposes. This function will take ownership of the given channel.