Decouple Brave Ads cmd-line arg flags

[tmancey]

No description provided.

[btlechowski]

Verification passed on

Brave	1.44.97 Chromium: 106.0.5249.55 (Official Build) (64-bit)
Revision	4d5f098fca6ab7f4b6b7c240be3d9593c2357709-refs/branch-heads/5249@{#531}
OS	Ubuntu 18.04 LTS

Verified test plan from brave/brave-core#14343

staging - --enable-features not blocked

Used command like:

--enable-logging=stderr --vmodule="*/riations/*"=6,"*/bat-native-ledger/*"=6,"*/brave_rewards/*"=6,"*/bat-native-ads/*"=6,"*bat-native-confirmations/*"=6,"*/brave_ads/*"=9,"*/brave_user_model/*"=6,"*/bat_ads/*"=6 --rewards=staging=true --enable-features="UserActivity:threshold/0.0"

was able to view the ad, --enable-features was not blocked

[13780:13780:0927/163205.884988:VERBOSE1:eligible_notification_ads_v1.cc(39)] Get eligible notification ads:
[13780:13780:0927/163205.892964:VERBOSE1:eligible_notification_ads_v1.cc(168)] Get eligible ads for untargeted segment
[13780:13780:0927/163205.910085:VERBOSE2:priority.h(34)] 11 ads with a priority of 1 in bucket 1
[13780:13780:0927/163205.910380:VERBOSE1:eligible_notification_ads_v1.cc(191)] 11 eligible ads out of 11 ads for untargeted segment
[13780:13780:0927/163205.910602:VERBOSE1:notification_ad.cc(135)] Opportunity arose to serve a notification ad
[13780:13780:0927/163205.911041:VERBOSE1:notification_ad_serving.cc(127)] Found 11 eligible ads
[13780:13780:0927/163205.911281:VERBOSE1:notification_ad_serving.cc(199)] Served notification ad:
  placementId: 4ec94c46-9581-442e-af2f-a0ed85b529b3
  creativeInstanceId: d55f52f6-f02b-4808-b6e2-b2a7734ad836
  creativeSetId: 45ea5952-37ca-41f0-88c2-4b546b0e6f4b
  campaignId: 1c1ac828-db13-49bb-9128-090132044b7f
  advertiserId: ecbcc833-8b1d-4867-98f7-ad2341396ce8
  segment: untargeted
  title: Ad2
  body: Ad2
  targetUrl: https://brave.com/

production - --enable-features blocked

command line used:

--enable-logging=stderr --vmodule="*/variations/*"=6,"*/bat-native-ledger/*"=6,"*/brave_rewards/*"=6,"*/bat-native-ads/*"=6,"*bat-native-confirmations/*"=6,"*/brave_ads/*"=9,"*/brave_user_model/*"=6,"*/bat_ads/*"=6 --enable-features="UserActivity:threshold/0.0"

The ad is not blocked.

[14997:14997:0927/165420.554075:VERBOSE1:eligible_notification_ads_v1.cc(39)] Get eligible notification ads:
[14997:14997:0927/165420.580474:VERBOSE1:eligible_notification_ads_v1.cc(168)] Get eligible ads for untargeted segment
[14997:14997:0927/165420.614147:VERBOSE2:priority.h(34)] 1 ads with a priority of 5 in bucket 1
[14997:14997:0927/165420.614331:VERBOSE1:eligible_notification_ads_v1.cc(191)] 1 eligible ads out of 1 ads for untargeted segment
[14997:14997:0927/165420.614411:VERBOSE1:notification_ad.cc(135)] Opportunity arose to serve a notification ad
[14997:14997:0927/165420.614710:VERBOSE1:notification_ad_serving.cc(127)] Found 1 eligible ads
[14997:14997:0927/165420.614825:VERBOSE1:notification_ad_serving.cc(199)] Served notification ad:
  placementId: eda49a07-04a4-48f5-9077-13cd85272fd4
  creativeInstanceId: c80153f6-cf22-41c0-8c2c-24c1f9a23c96
  creativeSetId: 58c1dcd9-24a4-4886-bf5d-4235c3074110
  campaignId: 5c00bdb5-a8b2-4290-b51d-96e5db2da195
  advertiserId: 602b6c48-d465-4530-a78f-4488ab88815d
  segment: untargeted
  title: Ledger Nano S
  body: The world’s most popular hardware wallet
  targetUrl: https://shop.ledger.com/products/ledger-nano-s-plus?r=0ba5d7199327
[14997:14997:0927/165420.622443:VERBOSE1:ads_service_impl.cc(954)] Timeout notification ad with placement id eda49a07-04a4-48f5-9077-13cd85272fd4 in 120 seconds
[14997:14997:0927/165420.622670:VERBOSE3:notification_ad_event_served.cc(23)] Served notification ad with placement id eda49a07-04a4-48f5-9077-13cd85272fd4 and creative instance id c80153f6-cf22-41c0-8c2c-24c1f9a23c96
[14997:14997:0927/165420.632051:VERBOSE3:notification_ad_event_viewed.cc(23)] Viewed notification ad with placement id eda49a07-04a4-48f5-9077-13cd85272fd4 and creative instance id c80153f6-cf22-41c0-8c2c-24c1f9a23c96