Move //components/metrics/compression_utils into standalone component

components/compression/compression_utils_unittest.cc

 // Copyright 2014 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 "components/metrics/compression_utils.h"
+#include "components/compression/compression_utils.h"
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/logging.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
-namespace metrics {
+namespace compression {
 
 namespace {
 
 // The data to be compressed by gzip. This is the hex representation of "hello
 // world".
 const uint8 kData[] =
     {0x68, 0x65, 0x6c, 0x6c, 0x6f, 0x20, 0x77, 0x6f,
      0x72, 0x6c, 0x64};
 
 // This is the string representation of gzip compressed string above. It was
@@ skipping 56 matching lines @@
       reinterpret_cast<const char*>(kCompressedData),
       arraysize(kCompressedData));
 
   std::string data(original_data);
   EXPECT_TRUE(GzipCompress(data, &data));
   EXPECT_EQ(golden_compressed_data, data);
   EXPECT_TRUE(GzipUncompress(data, &data));
   EXPECT_EQ(original_data, data);
 }
 
-}  // namespace metrics
+}  // namespace compression