Update the throttled_traffic_annotation_tags

Update the annotation tags of traffic that's throttled
when user has an active WebRTC call.

The new tags are the ones for which we have the right approvals.

Bug: 1005841
Change-Id: Ic370992a529158863990cae20a29cf0101026bef
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1868009Reviewed-by: Tarun Bansal <tbansal@chromium.org>
Reviewed-by: Jesse Doherty <jwd@chromium.org>
Auto-Submit: Tarun Bansal <tbansal@chromium.org>
Commit-Queue: Jesse Doherty <jwd@chromium.org>
Cr-Commit-Position: refs/heads/master@{#707462}

services/network/resource_scheduler/resource_scheduler_params_manager.cc

@@ -51,10 +51,10 @@ std::set<int32_t> GetThrottledHashes() {
   // either downlink or uplink traffic and are expected to cause traffic
   // contention with the P2P traffic on slow connections.
   if (throttled_traffic_annotation_tags.empty()) {
-    // 6019475: safe_browsing_module_loader
-    // 82509217: safe_browsing_v4_update
     // 727528: metrics_report_uma
-    throttled_traffic_annotation_tags = "6019475,82509217,727528";
+    // 727478: metrics_report_uma
+    // 18300705: gcm_channel_status_request
+    throttled_traffic_annotation_tags = "727528,727478,18300705";
   }
 
   const std::vector<std::string>& tokens =

testing/variations/fieldtrial_testing_config.json

@@ -4308,7 +4308,7 @@
                 {
                     "name": "Enabled_20190712",
                     "params": {
-                        "throttled_traffic_annotation_tags": "6019475,82509217,727528"
+                        "throttled_traffic_annotation_tags": "727528,727478,18300705"
                     },
                     "enable_features": [
                         "PauseBrowserInitiatedHeavyTrafficForP2P"