Version: Version 51.0.2664.1 canary (64-bit)
OS: Windows 7

What steps will reproduce the problem?
1. Create a Chrome Extension. 

In manifest.json, add a JavaScript comment:

{
  "manifest_version": 2,
  // TODO: Pick a better name
  "name": "moarTLS Analyzer",
  "short_name": "moarTLS",
  "description": "Analyzes webpages for non-secure link references.",
  "version": "0.1.0.3",
  ...

2. Chrome has no problem loading this extension via "Load unpacked extension..."

3. Attempt to upload the Extension to the Chrome Web Store.

OBSERVE: Upload Rejected

The problem is that if the developer subsequently attempts to upload the extension to the Web Store, it is rejected with an "invalid character" error. The line numbers in the error message are inaccurate, but the problem is caused by the fact that the store is using a more strict JSON parser, and the JSON standard does not allow for comments.

We should probably make Chrome's parser as strict as the Store's.