Intercept captures background traffic from other tabs

[dostoevskylabs]

The way that it currently handles intercepting is to turn the proxy on when you switch to the tab defined as a proxy tab, when you switch out it turns the proxy off.

The bug is that if you switch to a proxy tab but other tabs are sending off background data (ie: ajax posts to an api) it will get captured because you are in a proxy tab context.

Unfortunately the proxy API is browser wide so I need to find a workaround to ignore traffic from other tabs.

Current working theory: using the WebRequest api to intercept all traffic when in a proxied tab, and if it's not from the proxy tab, disable proxy for that request, then re-enable it afterwards

[dostoevskylabs]

Fixed by using webrequest api instead.