Update to Chromium version 71.0.3567.0 (#595360)

- Configuration of OSR VSync interval is currently missing (issue #2517)
- Rename VERSION to VERSION.in to fix libc++ compile error (issue #2518)

libcef/browser/extensions/extensions_browser_client.cc

@@ -259,6 +259,11 @@ bool CefExtensionsBrowserClient::IsInDemoMode() {
   return false;
 }
 
+bool CefExtensionsBrowserClient::IsScreensaverInDemoMode(
+    const std::string& app_id) {
+  return false;
+}
+
 bool CefExtensionsBrowserClient::IsRunningInForcedAppMode() {
   return false;
 }