Update to Chromium revision cb947c01 (#352221)

- Implement CefRequestHandler::OnBeforeBrowse using NavigationThrottle
  instead of ResourceThrottle (see http://crbug.com/537634). The CefRequest
  object passed to OnBeforeBrowse will no longer have an associated request
  identifier.
- Mac: Remove additional helper apps which are no longer required (see
  http://crbug.com/520680)
- Remove the UR_FLAG_REPORT_RAW_HEADERS flag which is no longer supported (see
  http://crbug.com/517114)
- Remove the CefBrowserSettings.java parameter. Java is an NPAPI plugin and
  NPAPI plugins are no longer supported (see http://crbug.com/470301#c11)
- Add CefFormatUrlForSecurityDisplay function in cef_parser.h
- Fix crash when passing `--disable-extensions` command-line flag (issue #1721)
- Linux: Fix NSS handler loading (issue #1727)

include/internal/cef_types_wrappers.h

@@ -605,7 +605,6 @@ struct CefBrowserSettingsTraits {
     target->javascript_access_clipboard = src->javascript_access_clipboard;
     target->javascript_dom_paste = src->javascript_dom_paste;
     target->caret_browsing = src->caret_browsing;
-    target->java = src->java;
     target->plugins = src->plugins;
     target->universal_access_from_file_urls =
         src->universal_access_from_file_urls;