Move chromeos code to namespace chromeos.

chrome/browser/chromeos/pipe_reader_unittest.cc

 // Copyright (c) 2009 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 "chrome/browser/chromeos/pipe_reader.h"
 
 #include <errno.h>
 
 #include "base/safe_strerror_posix.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
+namespace chromeos {
+
 typedef testing::Test PipeReaderTest;
 
 TEST_F(PipeReaderTest, SuccessfulReadTest) {
   std::string pipe_name("/tmp/MYFIFO");
   /* Create the FIFO if it does not exist */
   umask(0);
   mknod(pipe_name.c_str(), S_IFIFO|0666, 0);
   const char line[] = "foo";
 
   pid_t pID = fork();
@@ skipping 67 matching lines @@
     // asking for more should still just return the amount that was written.
     std::string my_foo = reader.Read(5 * line.length());
     EXPECT_EQ(my_foo[my_foo.length() - 1], '\n');
     my_foo.resize(my_foo.length() - 1);
     EXPECT_EQ(my_foo, foo);
 
     std::string my_boo = reader.Read(5 * line.length());
     EXPECT_EQ(my_boo, boo);
   }
 }
+
+}  // namespace chromeos