Rewire the local sync switches through the pref store.

chrome/browser/prefs/chrome_command_line_pref_store.cc

 // Copyright (c) 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 "chrome/browser/prefs/chrome_command_line_pref_store.h"
 
 #include <stddef.h>
 
 #include <string>
 #include <utility>
 #include <vector>
 
 #include "ash/common/ash_switches.h"
 #include "base/files/file_path.h"
 #include "base/logging.h"
 #include "base/memory/ptr_util.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_split.h"
 #include "base/values.h"
 #include "build/build_config.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/pref_names.h"
+#include "components/browser_sync/browser_sync_switches.h"
 #include "components/data_reduction_proxy/core/common/data_reduction_proxy_pref_names.h"
 #include "components/data_reduction_proxy/core/common/data_reduction_proxy_switches.h"
 #include "components/proxy_config/proxy_config_dictionary.h"
 #include "components/proxy_config/proxy_config_pref_names.h"
 #include "components/ssl_config/ssl_config_prefs.h"
 #include "components/ssl_config/ssl_config_switches.h"
+#include "components/sync/base/pref_names.h"
 #include "content/public/common/content_switches.h"
 #include "ui/base/ui_base_switches.h"
 #include "ui/display/display_switches.h"
 
 #if defined(OS_ANDROID)
 #include "chrome/browser/android/preferences/command_line_pref_store_android.h"
 #endif
 
 #if defined(OS_CHROMEOS)
 #include "chromeos/chromeos_switches.h"
 #endif
 
 const CommandLinePrefStore::SwitchToPreferenceMapEntry
     ChromeCommandLinePrefStore::string_switch_map_[] = {
       { switches::kLang, prefs::kApplicationLocale },
       { data_reduction_proxy::switches::kDataReductionProxy,
           data_reduction_proxy::prefs::kDataReductionProxy },
       { switches::kAuthServerWhitelist, prefs::kAuthServerWhitelist },
       { switches::kSSLVersionMin, ssl_config::prefs::kSSLVersionMin },
       { switches::kSSLVersionMax, ssl_config::prefs::kSSLVersionMax },
 #if defined(OS_ANDROID)
       { switches::kAuthAndroidNegotiateAccountType,
           prefs::kAuthAndroidNegotiateAccountType },
 #endif
 };
 
 const CommandLinePrefStore::SwitchToPreferenceMapEntry
     ChromeCommandLinePrefStore::path_switch_map_[] = {
       { switches::kDiskCacheDir, prefs::kDiskCacheDir },
+      { switches::kLocalSyncBackendDir, syncer::prefs::kLocalSyncBackendDir },
 };
 
 const CommandLinePrefStore::BooleanSwitchToPreferenceMapEntry
     ChromeCommandLinePrefStore::boolean_switch_map_[] = {
         {switches::kDisable3DAPIs, prefs::kDisable3DAPIs, true},
         {switches::kEnableCloudPrintProxy, prefs::kCloudPrintProxyEnabled,
          true},
         {switches::kAllowOutdatedPlugins, prefs::kPluginsAllowOutdated, true},
         {switches::kAlwaysAuthorizePlugins, prefs::kPluginsAlwaysAuthorize,
          true},
         {switches::kNoPings, prefs::kEnableHyperlinkAuditing, false},
         {switches::kNoReferrers, prefs::kEnableReferrers, false},
         {switches::kAllowRunningInsecureContent,
          prefs::kWebKitAllowRunningInsecureContent, true},
         {switches::kAllowCrossOriginAuthPrompt,
          prefs::kAllowCrossOriginAuthPrompt, true},
         {switches::kDisablePrintPreview, prefs::kPrintPreviewDisabled, true},
 #if defined(OS_CHROMEOS)
         {chromeos::switches::kEnableTouchpadThreeFingerClick,
          prefs::kEnableTouchpadThreeFingerClick, true},
         {switches::kEnableUnifiedDesktop,
          prefs::kUnifiedDesktopEnabledByDefault, true},
 #endif
         {switches::kUnsafePacUrl, prefs::kPacHttpsUrlStrippingEnabled, false},
+        {switches::kEnableLocalSyncBackend,
+         syncer::prefs::kEnableLocalSyncBackend, false},
 };
 
 const CommandLinePrefStore::SwitchToPreferenceMapEntry
     ChromeCommandLinePrefStore::integer_switch_map_[] = {
       { switches::kDiskCacheSize, prefs::kDiskCacheSize },
       { switches::kMediaCacheSize, prefs::kMediaCacheSize },
     };
 
 ChromeCommandLinePrefStore::ChromeCommandLinePrefStore(
     const base::CommandLine* command_line)
@@ skipping 70 matching lines @@
   }
 }
 
 void ChromeCommandLinePrefStore::ApplyBackgroundModeSwitches() {
   if (command_line()->HasSwitch(switches::kDisableExtensions)) {
     SetValue(prefs::kBackgroundModeEnabled,
              base::MakeUnique<base::FundamentalValue>(false),
              WriteablePrefStore::DEFAULT_PREF_WRITE_FLAGS);
   }
 }