Chrome Version       : 54.0.2840.59
OS Version: OS X 10.11.6 (Applies to all platforms)
URLs (if applicable) :
Other browsers tested:
  Add OK or FAIL after other browsers where you have tested this issue:
     Safari 5: FAIL
  Firefox 48: OK
  FF Devl 50: OK
     IE 7/8/9: <UNTESTED>

What steps will reproduce the problem?
1. Open the DevTools JavaScript Console
2. Enter:
   { let a = "hello"; a; }

What is the expected result?
The string "hello" to be printed.

What happens instead of that?
VM413:1 Uncaught SyntaxError: Unexpected identifier

Please provide any additional information below. Attach a screenshot if
possible.

A discussion on the Chromium Dev Slack with Jonathan Garbee (@garbee) elaborated that statements issued in the Console beginning with `{` are wrapped in a block scope. A bug filing was suggested.

Note that Firefox, Firefox Developer Edition and the NodeJS REPL (v6) behave "as expected", in that block scoping is not automatically applied.

Chrome and Safari 5 seem to both automatically apply block scoping.

For context, see:
- https://chromiumdev.slack.com/archives/devtools/p1476374281000072
- https://chromiumdev.slack.com/archives/devtools/p1476376011000075

UserAgentString: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.2840.59 Safari/537.36