Implement support for a cancelable SyncSocket.

content/browser/renderer_host/media/audio_input_sync_writer.cc

Index: content/browser/renderer_host/media/audio_input_sync_writer.cc
diff --git a/content/browser/renderer_host/media/audio_input_sync_writer.cc b/content/browser/renderer_host/media/audio_input_sync_writer.cc
index 8add5b5d569f899a167344eadc7862cc6e57b084..395a21fd818bfe67ac06546c9ba0d98f0047c87d 100644
--- a/content/browser/renderer_host/media/audio_input_sync_writer.cc
+++ b/content/browser/renderer_host/media/audio_input_sync_writer.cc
@@ -31,13 +31,9 @@ void AudioInputSyncWriter::Close() {
 }
 
 bool AudioInputSyncWriter::Init() {
-  base::SyncSocket* sockets[2] = {0};
-  if (base::SyncSocket::CreatePair(sockets)) {
-    socket_.reset(sockets[0]);
-    foreign_socket_.reset(sockets[1]);
-    return true;
-  }
-  return false;
+  socket_.reset(new base::SyncSocket());
+  foreign_socket_.reset(new base::SyncSocket());
+  return base::SyncSocket::CreatePair(socket_.get(), foreign_socket_.get());
 }
 
 #if defined(OS_WIN)