Move //components/metrics/compression_utils into standalone component

components/metrics/persisted_logs_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/persisted_logs.h"
 
 #include "base/base64.h"
 #include "base/prefs/pref_registry_simple.h"
 #include "base/prefs/scoped_user_pref_update.h"
 #include "base/prefs/testing_pref_service.h"
 #include "base/rand_util.h"
 #include "base/sha1.h"
 #include "base/values.h"
-#include "components/metrics/compression_utils.h"
+#include "components/compression/compression_utils.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace metrics {
 
 namespace {
 
 const char kTestPrefName[] = "TestPref";
 const size_t kLogCountLimit = 3;
 const size_t kLogByteLimit = 1000;
 
 // Compresses |log_data| and returns the result.
 std::string Compress(const std::string& log_data) {
   std::string compressed_log_data;
-  EXPECT_TRUE(GzipCompress(log_data, &compressed_log_data));
+  EXPECT_TRUE(compression::GzipCompress(log_data, &compressed_log_data));
   return compressed_log_data;
 }
 
 // Generates and returns log data such that its size after compression is at
 // least |min_compressed_size|.
 std::string GenerateLogWithMinCompressedSize(size_t min_compressed_size) {
   // Since the size check is done against a compressed log, generate enough
   // data that compresses to larger than |log_size|.
   std::string rand_bytes = base::RandBytesAsString(min_compressed_size);
   while (Compress(rand_bytes).size() < min_compressed_size)
@@ skipping 238 matching lines @@
 
   TestPersistedLogs persisted_logs(&prefs_, kLogByteLimit);
   persisted_logs.StoreLog(kFooText);
   persisted_logs.StageLog();
 
   EXPECT_EQ(Compress(kFooText), persisted_logs.staged_log());
   EXPECT_EQ(foo_hash, persisted_logs.staged_log_hash());
 }
 
 }  // namespace metrics