Move IPC tests into anonymous namespaces.

ipc/ipc_channel_unittest.cc

 // Copyright (c) 2012 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 "build/build_config.h"
 
 #if defined(OS_WIN)
 #include <windows.h>
 #elif defined(OS_POSIX)
 #include <sys/types.h>
@@ skipping 16 matching lines @@
 #include "ipc/ipc_descriptors.h"
 #include "ipc/ipc_channel.h"
 #include "ipc/ipc_channel_proxy.h"
 #include "ipc/ipc_message_utils.h"
 #include "ipc/ipc_multiprocess_test.h"
 #include "ipc/ipc_sender.h"
 #include "ipc/ipc_switches.h"
 #include "ipc/ipc_test_base.h"
 #include "testing/multiprocess_func_list.h"
 
+namespace {
+
 const size_t kLongMessageStringNumBytes = 50000;
 
 class IPCChannelTest : public IPCTestBase {
 };
 
 TEST_F(IPCChannelTest, BasicMessageTest) {
   int v1 = 10;
   std::string v2("foobar");
   std::wstring v3(L"hello world");
 
@@ skipping 280 matching lines @@
   // setup IPC channel
   IPC::Channel chan(kTestClientChannel, IPC::Channel::MODE_CLIENT,
                     &channel_listener);
   CHECK(chan.Connect());
   channel_listener.Init(&chan);
   Send(&chan, "hello from child");
   // run message loop
   MessageLoop::current()->Run();
   return 0;
 }
+
+}  // namespace