Augment AdSense/Doubleclick Ad Ursl to indicate remote HTML and future RTC usage

[keithwrightbos]

Fast Fetch currently does not support remote HTML causing fallback to delayed fetch until #8551 is released and publishers move to the new implementation. In order to track this effort, ad new parameter to AdSense/Doubleclick urls indicating if remote HTML, RTC, or neither were used.

cc/ @ampproject/a4a

[ampprojectbot]

This issue hasn't been updated in awhile. @bradfrizzell Do you have any updates?

[jasti]

@bradfrizzell ping

[bradfrizzell]

I've added this to gpt, not yet to adsense.

[ampprojectbot]

This issue hasn't been updated in awhile. @bradfrizzell Do you have any updates?

[bradfrizzell]

Closing this as it is available for GPT, and Adsense doesn't really make sense as Adsense doesn't have RTC or remote html