71.0.3578.98 (Official Build) (64-bit)
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.98 Safari/537.36

What steps will reproduce the problem?
(1) Open DevTools
(2) Open a webpage with an invalid unicode escape sequence (attached invalid_char.htm)
(3) Open network panel, right click the request to invalid_char.htm and click "Save as..."

What is the expected result?
A file picker appears and allows you to save invalid_char.htm to disk

What happens instead?
No file picker appears and no errors are shown


This is happening because base::JSONParser::Parse is being called with default arguments which causes it to fail because it rejects invalid unicode code points: https://cs.chromium.org/chromium/src/chrome/browser/devtools/devtools_ui_bindings.cc?l=580&rcl=9a51b3495410579db88bb6356b90f813f747fe8c

A fix was proposed in this change: https://chromium-review.googlesource.com/c/chromium/src/+/1399538

The issue originally surfaced in this bug:  http://crbug.com/824174 
 

Deleted: invalid_char.htm 27 bytes

invalid_char.htm 27 bytes View Download