EME logger broke booking.com's pop-up window

[xhwang-chromium]

It seems the latest EME logger (version 3.1.1) broke booking.com's pop-up window.

Steps to repro:

• Has EME logger (version 3.1.1) extension enabled
• Go to booking.com
• Search for a hotel and click a result
• Click the "Show on map" on the left panel

Expected:

• Map shows up in a pop-up window

Actual:

• Map never shows up.

Note:

• The problem goes away after disabling EME logger.
• This can also be reproduced by clicking a room to see details. The pop up window keeps spinning (see attached screenshot).

[xhwang-chromium]

[joeyparrish]

This line at the end of TraceAnything is responsible:

exports = {TraceAnything};

This bug was introduced when we forked TraceAnything into its own module.

If I open the debugger and set a breakpoint on that line, then skip over it and set exports back to undefined, booking.com works correctly. It looks like I accidentally polluted the window from the module and broke another module system by writing to global exports.