Revert of Delete base/prefs and update callers to use components.

components/content_settings/core/browser/content_settings_pref.cc

 // Copyright 2015 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/content_settings/core/browser/content_settings_pref.h"
 
 #include "base/auto_reset.h"
 #include "base/bind.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/metrics/histogram_macros.h"
+#include "base/prefs/scoped_user_pref_update.h"
 #include "base/strings/string_split.h"
 #include "base/time/clock.h"
 #include "components/content_settings/core/browser/content_settings_info.h"
 #include "components/content_settings/core/browser/content_settings_registry.h"
 #include "components/content_settings/core/browser/content_settings_rule.h"
 #include "components/content_settings/core/browser/content_settings_utils.h"
 #include "components/content_settings/core/browser/host_content_settings_map.h"
 #include "components/content_settings/core/common/content_settings.h"
 #include "components/content_settings/core/common/content_settings_pattern.h"
 #include "components/content_settings/core/common/pref_names.h"
-#include "components/prefs/scoped_user_pref_update.h"
 #include "url/gurl.h"
 
 namespace {
 
 const char kSettingPath[] = "setting";
 const char kPerResourceIdentifierPrefName[] = "per_resource";
 const char kLastUsed[] = "last_used";
 
 // If the given content type supports resource identifiers in user preferences,
 // returns true and sets |pref_key| to the key in the content settings
@@ skipping 476 matching lines @@
 
 void ContentSettingsPref::AssertLockNotHeld() const {
 #if !defined(NDEBUG)
   // |Lock::Acquire()| will assert if the lock is held by this thread.
   lock_.Acquire();
   lock_.Release();
 #endif
 }
 
 }  // namespace content_settings