Put the Pepper stuff in the content namespace.

content/renderer/pepper/pepper_broker_impl_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 "content/renderer/pepper/pepper_broker_impl.h"
 
 #if defined(OS_POSIX)
 #include <fcntl.h>
 #include <sys/socket.h>
 #endif  // defined(OS_POSIX)
 
 #include "content/test/mock_render_process.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
+namespace content {
+
 class PepperBrokerImplTest : public ::testing::Test {
  protected:
   MessageLoopForIO message_loop_;
   // We need a render process for ppapi::proxy::ProxyChannel to work.
   MockRenderProcess mock_process_;
 };
 
 // Try to initialize PepperBrokerDispatcherWrapper with invalid ChannelHandle.
 // Initialization should fail.
 TEST_F(PepperBrokerImplTest, InitFailure) {
@@ skipping 24 matching lines @@
 #else
   IPC::ChannelHandle valid_channel(kChannelName);
 #endif  // defined(OS_POSIX));
 
   EXPECT_TRUE(dispatcher_wrapper.Init(broker_process_handle, valid_channel));
 
 #if defined(OS_POSIX)
   EXPECT_EQ(0, ::close(fds[0]));
 #endif  // defined(OS_POSIX));
 }
+
+}  // namespace content