Move Tuple to base namespace.

ipc/ipc_test_sink.h

 // Copyright (c) 2011 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.
 
 #ifndef IPC_IPC_TEST_SINK_H_
 #define IPC_IPC_TEST_SINK_H_
 
 #include <utility>
 #include <vector>
 
@@ skipping 27 matching lines @@
 //   int second_param;
 //   ViewMsg_Foo::Read(msg, &first_param, &second_param);
 //
 //   // Go on to the next phase of the test.
 //   test_sink.ClearMessages();
 //
 // To read a sync reply, do this:
 //
 //   IPC::Message* msg = test_sink.GetUniqueMessageMatching(IPC_REPLY_ID);
 //   ASSERT_TRUE(msg);
-//   TupleTypes<ViewHostMsg_Foo::ReplyParam>::ValueTuple reply_data;
+//   base::TupleTypes<ViewHostMsg_Foo::ReplyParam>::ValueTuple reply_data;
 //   EXPECT_TRUE(ViewHostMsg_Foo::ReadReplyParam(msg, &reply_data));
 //
 // You can also register to be notified when messages are posted to the sink.
 // This can be useful if you need to wait for a particular message that will
 // be posted asynchronously.  Example usage:
 //
 //   class MyListener : public IPC::Listener {
 //    public:
 //     virtual bool OnMessageReceived(const IPC::Message& msg) {
 //       <do something with the message>
@@ skipping 70 matching lines @@
   // The actual list of received messages.
   std::vector<Message> messages_;
   ObserverList<Listener> filter_list_;
 
   DISALLOW_COPY_AND_ASSIGN(TestSink);
 };
 
 }  // namespace IPC
 
 #endif  // IPC_IPC_TEST_SINK_H_