Revert of NTP Zombie Code Slayer Part IV: Most Visited

chrome/browser/history/DEPS

 include_rules = [
   # History is being made into a Browser Component (http://crbug.com/370850), so
   # we have these basic rules followed by temporary exceptions.  Please don't
   # add to the list of exceptions!
   #
   # Please send reviews to sdefresne@chromium.org when adding dependencies to
   # this list.
   "-chrome/browser",
   "-components",
 
@@ skipping 35 matching lines @@
     "+chrome/browser/bookmarks/chrome_bookmark_client_factory.h",
     "+chrome/browser/content_settings/cookie_settings.h",
     "+chrome/browser/history/android/android_provider_backend.h",
     "+chrome/browser/signin/profile_oauth2_token_service_factory.h",
     "+chrome/browser/signin/signin_manager_factory.h",
     "+chrome/browser/sync/profile_sync_service.h",
     "+chrome/browser/sync/profile_sync_service_factory.h",
     "+chrome/browser/ui/profile_error_dialog.h",
     "+components/bookmarks/browser",
     "+components/keyed_service/content",
-    "+components/pref_registry",
   ],
   # Those files will move to //components/history/content/browser and thus
   # can depend on //content even indirectly.
   'content_.*\.(cc|h)': [
     "+components/visitedlink/browser",
   ],
   # TODO(sdefresne): Bring this list to zero.
   #
   # Do not add to the list of temporarily-allowed dependencies below,
   # and please do not introduce more #includes of these files.
   '.*_[a-z]*test\.cc': [
     "!chrome/browser/bookmarks/bookmark_model_factory.h",
     "!chrome/browser/signin/profile_oauth2_token_service_factory.h",
     "!chrome/browser/signin/signin_manager_factory.h",
     "!chrome/browser/sync/profile_sync_service.h",
     "!chrome/browser/sync/profile_sync_service_factory.h",
     "!chrome/browser/sync/profile_sync_service_mock.h",
     "!components/bookmarks/test/bookmark_test_helpers.h",
   ]
 }