Move //components/metrics/compression_utils into standalone component

sync/internal_api/http_bridge_unittest.cc

 // Copyright 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 "base/metrics/field_trial.h"
 #include "base/strings/stringprintf.h"
 #include "base/synchronization/waitable_event.h"
 #include "base/test/mock_entropy_provider.h"
 #include "base/threading/thread.h"
 #include "net/http/http_response_headers.h"
 #include "net/test/spawned_test_server/spawned_test_server.h"
 #include "net/url_request/test_url_fetcher_factory.h"
 #include "net/url_request/url_fetcher_delegate.h"
 #include "net/url_request/url_request_test_util.h"
 #include "sync/internal_api/public/base/cancelation_signal.h"
 #include "sync/internal_api/public/http_bridge.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/zlib/zlib.h"
 
 namespace syncer {
 
 namespace {
 
 // TODO(timsteele): Should use PathService here. See Chromium Issue 3113.
 const base::FilePath::CharType kDocRoot[] =
     FILE_PATH_LITERAL("chrome/test/data");
 
 // -----------------------------------------------------------------------------
 // The rest of the code in the anon namespace is copied from
-// components/metrics/compression_utils.cc
+// components/compression/compression_utils.cc
 // TODO(gangwu): crbug.com/515695. The following codes are copied from
-// components/metrics/compression_utils.cc, we copied them because if we
+// components/compression/compression_utils.cc, we copied them because if we
 // reference them, we will get cycle dependency warning. Once the functions
 // have been moved from //component to //base, we can remove the following
 // functions.
 //------------------------------------------------------------------------------
 // Pass an integer greater than the following get a gzip header instead of a
 // zlib header when calling deflateInit2() and inflateInit2().
 const int kWindowBitsToGetGzipHeader = 16;
 
 // This code is taken almost verbatim from third_party/zlib/uncompr.c. The only
 // difference is inflateInit2() is called which sets the window bits to be > 16.
@@ skipping 630 matching lines @@
 
   // Sync thread: Finally run the posted task, only to find that our
   // HttpBridgeFactory has been neutered.  Should not crash.
   factory->Init("TestUserAgent");
 
   // At this point, attempting to use the factory would trigger a crash.  Both
   // this test and the real world code should make sure this never happens.
 };
 
 }  // namespace syncer