[Metrics] Move CachingPermutedEntropyProvider into the variations component.

chrome/browser/metrics/metrics_state_manager_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 "chrome/browser/metrics/metrics_state_manager.h"
 
 #include <ctype.h>
 #include <string>
 
 #include "base/command_line.h"
 #include "base/prefs/testing_pref_service.h"
 #include "chrome/common/chrome_switches.h"
-#include "chrome/common/metrics/caching_permuted_entropy_provider.h"
 #include "chrome/common/pref_names.h"
+#include "components/variations/caching_permuted_entropy_provider.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace metrics {
 
 class MetricsStateManagerTest : public testing::Test {
  public:
   MetricsStateManagerTest() {
     MetricsStateManager::RegisterPrefs(prefs_.registry());
   }
 
@@ skipping 126 matching lines @@
 
     state_manager->GetLowEntropySource();
 
     EXPECT_FALSE(prefs_.GetBoolean(prefs::kMetricsResetIds));
   }
 
   EXPECT_NE(kInitialClientId, prefs_.GetString(prefs::kMetricsClientID));
 }
 
 }  // namespace metrics