Update to Chromium version 82.0.4085.0 (#749737)

- Building on macOS now requires the 10.15 SDK. Xcode 11.3 is recommended as
  Xcode 11.4 is not currently supported (see https://crbug.com/1065146).
- Jumbo build configuration is no longer supported.

Chromium is skipping the M82 release and consequently no CEF 4085 branch will
be created. For details on the Chromium decision see
https://groups.google.com/a/chromium.org/d/msg/chromium-dev/Vn7uzglqLz0/JItlSrZxBAAJ

libcef/renderer/blink_glue.cc

@@ -152,7 +152,8 @@ v8::MaybeLocal<v8::Value> CallV8Function(v8::Local<v8::Context> context,
   if (frame &&
       frame->GetDocument()->CanExecuteScripts(blink::kAboutToExecuteScript)) {
     func_rv = blink::V8ScriptRunner::CallFunction(
-        function, frame->GetDocument(), receiver, argc, args, isolate);
+        function, frame->GetDocument()->ToExecutionContext(), receiver, argc,
+        args, isolate);
   }
 
   return func_rv;