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)

patch/patches/gyp_331.patch

@@ -21,10 +21,10 @@ index 51c288b..d996bbd 100644
          dst = self.GypPathToNinja(os.path.join(copy['destination'], basename),
                                    env)
 diff --git gyp/msvs_emulation.py gyp/msvs_emulation.py
-index ce5c46e..2f03c01 100644
+index ca67b12..a3fd903 100644
 --- gyp/msvs_emulation.py
 +++ gyp/msvs_emulation.py
-@@ -1017,8 +1017,10 @@ def GenerateEnvironmentFiles(toplevel_build_dir, generator_flags,
+@@ -1027,8 +1027,10 @@ def GenerateEnvironmentFiles(toplevel_build_dir, generator_flags,
      args = vs.SetupScript(arch)
      args.extend(('&&', 'set'))
      popen = subprocess.Popen(