1635574 - Send the last used source with ad click telemetry

Status: RESOLVED DUPLICATE of bug 1664847

(Firefox :: Search, task, P3)

Description

[Ben Miroglio [:bmiroglio]]

For SAP searches we send the source, or, where the search occurred, i.e. urlbar, newtab, searchbar etc.

For our ad click telemetry (browser.search.ad_clicks, browser.search.with_ads), we do not send source information since there isn't an explicit source for ad clicks in this sense.

I'm not sure what the most accurate implementation of this would be, but I'd like to start inferring the source of the ad-related events, based on the source used for the search that resulted in either an ad click, or an ad impression.

For example, if I searched for "shoes" in the url bar and was shown an ad, the source for the search.with_ads probe would be urlbar. Similarly, if I clicked an ad on the SERP, the source for the ad click would be urlbar, assuming we can track this accurately from the moment the search occurs to when ad click occurs.

Alternatively, we could store the "last used" search source, and populate the ad click source with this field when an ad click occurs if the above isn't possible.