Split token-related methods from WebDataService

chrome/browser/signin/DEPS

 include_rules = [
   # Sign-in logic is being componentized (moved to //components, where
   # it won't depend back on //chrome), so we have restrictive DEPS and
   # are trying to get the list of temporarily-allowed (!-prefixed
   # rules) below to zero.
   "-chrome/common",
   "-chrome/browser",
   "+chrome/browser/signin",
 
   # TODO(joi): Get this list to zero.
@@ skipping 15 matching lines @@
   "!chrome/browser/ui/browser_commands.h",
   "!chrome/browser/ui/chrome_pages.h",
   "!chrome/browser/ui/global_error/global_error.h",
   "!chrome/browser/ui/global_error/global_error_service.h",
   "!chrome/browser/ui/global_error/global_error_service_factory.h",
   "!chrome/browser/ui/host_desktop.h",
   "!chrome/browser/ui/webui/signin/login_ui_service.h",
   "!chrome/browser/ui/webui/signin/login_ui_service_factory.h",
   "!chrome/browser/ui/webui/signin/profile_signin_confirmation_dialog.h",
   "!chrome/browser/ui/webui/signin_internals_ui.h",
-  "!chrome/browser/webdata/web_data_service.h",
+  "!chrome/browser/webdata/token_web_data.h",
   "!chrome/browser/webdata/web_data_service_factory.h",
   "!chrome/common/chrome_notification_types.h",
   "!chrome/common/chrome_switches.h",
   "!chrome/common/chrome_version_info.h",
   "!chrome/common/extensions/extension_messages.h",
   "!chrome/common/pref_names.h",
   "!chrome/common/url_constants.h",
 ]
 
 specific_include_rules = {
@@ skipping 10 matching lines @@
 
   # These files are staying in //chrome so no need to limit.
   r"(chrome_signin_manager_delegate|"
   r"signin_names_io_thread.*|"
   r"signin_manager_factory)"
   r"\.(h|cc)": [
     "+chrome/browser",
     "+chrome/common",
   ],
 }