Utilize GSC for experiments when enabled

- This passes through known experiment context keys to the track call so
they can be utilized by the gitlab standard context if supported.

app/experiments/application_experiment.rb

@@ -41,6 +41,10 @@ class ApplicationExperiment < Gitlab::Experiment # rubocop:disable Gitlab/Namesp
     # define a default nil control behavior so we can omit it when not needed
   end
 
+  def track(action, **event_args)
+    super(action, **tracking_context.merge(event_args))
+  end
+
   # TODO: remove
   # This is deprecated logic as of v0.6.0 and should eventually be removed, but
   # needs to stay intact for actively running experiments. The new strategy
@@ -60,6 +64,19 @@ class ApplicationExperiment < Gitlab::Experiment # rubocop:disable Gitlab/Namesp
 
   private
 
+  def tracking_context
+    {
+      namespace: context.try(:namespace) || context.try(:group),
+      project: context.try(:project),
+      user: user_or_actor
+    }.compact || {}
+  end
+
+  def user_or_actor
+    actor = context.try(:actor)
+    actor.respond_to?(:id) ? actor : context.try(:user)
+  end
+
   def feature_flag_name
     name.tr('/', '_')
   end

spec/experiments/application_experiment_spec.rb

@@ -233,6 +233,75 @@ RSpec.describe ApplicationExperiment, :experiment do
         ]
       )
     end
+
+    context "when using known context resources" do
+      let(:user) { build(:user, id: non_existing_record_id) }
+      let(:project) { build(:project, id: non_existing_record_id) }
+      let(:namespace) { build(:namespace, id: non_existing_record_id) }
+      let(:group) { build(:group, id: non_existing_record_id) }
+      let(:actor) { user }
+
+      let(:context) { { user: user, project: project, namespace: namespace } }
+
+      it "includes those using the gitlab standard context" do
+        subject.track(:action)
+
+        expect_snowplow_event(
+          category: 'namespaced/stub',
+          action: 'action',
+          user: user,
+          project: project,
+          namespace: namespace,
+          context: an_instance_of(Array)
+        )
+      end
+
+      it "falls back to using the group key" do
+        subject.context(namespace: nil, group: group)
+
+        subject.track(:action)
+
+        expect_snowplow_event(
+          category: 'namespaced/stub',
+          action: 'action',
+          user: user,
+          project: project,
+          namespace: group,
+          context: an_instance_of(Array)
+        )
+      end
+
+      context "with the actor key" do
+        it "provides it to the tracking call as the user" do
+          subject.context(user: nil, actor: actor)
+
+          subject.track(:action)
+
+          expect_snowplow_event(
+            category: 'namespaced/stub',
+            action: 'action',
+            user: actor,
+            project: project,
+            namespace: namespace,
+            context: an_instance_of(Array)
+          )
+        end
+
+        it "handles when it's not a user record" do
+          subject.context(user: nil, actor: nil)
+
+          subject.track(:action)
+
+          expect_snowplow_event(
+            category: 'namespaced/stub',
+            action: 'action',
+            project: project,
+            namespace: namespace,
+            context: an_instance_of(Array)
+          )
+        end
+      end
+    end
   end
 
   describe "#key_for" do

spec/support/helpers/snowplow_helpers.rb

@@ -48,12 +48,16 @@ module SnowplowHelpers
   #   )
   def expect_snowplow_event(category:, action:, context: nil, **kwargs)
     if context
+      if context.is_a?(Array)
         kwargs[:context] = []
         context.each do |c|
           expect(SnowplowTracker::SelfDescribingJson).to have_received(:new)
             .with(c[:schema], c[:data]).at_least(:once)
           kwargs[:context] << an_instance_of(SnowplowTracker::SelfDescribingJson)
         end
+      else
+        kwargs[:context] = context
+      end
     end
 
     expect(Gitlab::Tracking).to have_received(:event) # rubocop:disable RSpec/ExpectGitlabTracking