No issue: Add valid channel set (#11622) (#11624)

(cherry picked from commit d6efa19a

)
Co-authored-by: Roger Yang <royang@mozilla.com>

components/feature/search/src/main/java/mozilla/components/feature/search/telemetry/Utils.kt

@@ -22,6 +22,7 @@ private val validCodeSet = setOf(
     "ffab", "ffcm", "ffhp", "ffip", "ffit", "ffnt", "ffocus", "ffos", "ffsb", "fpas", "fpsa",
     "ftas", "ftsa", "newext", "1000969a", null
 )
+private val validChannelSet = setOf("ts")
 
 /**
  * Get a String in a specific format allowing to identify how an ads/search provider was used.
@@ -70,7 +71,13 @@ internal fun getTrackKey(
 
         // For Bing if it didn't have a valid cookie and for all the other search engines
         if (hasValidCode(uri.getQueryParameter(provider.codeParam), provider)) {
-            val channel = uri.getQueryParameter(CHANNEL_KEY)
+            var channel = uri.getQueryParameter(CHANNEL_KEY)
+
+            // For Bug 1751955
+            if (!validChannelSet.contains(channel)) {
+                channel = null
+            }
+
             val type = getSapType(provider.followOnParams, paramSet)
             return TrackKeyInfo(provider.name, type, code, channel).createTrackKey()
         }

components/feature/search/src/test/java/mozilla/components/feature/search/telemetry/incontent/InContentTelemetryTest.kt

@@ -203,6 +203,25 @@ class InContentTelemetryTest {
         assertEquals("google.in-content.sap-follow-on.firefox-b-m.ts", facts[0].value)
     }
 
+    @Test
+    fun `GIVEN an invalid Google channel from topSite WHEN trackPartnerUrlTypeMetric is called THEN emit an appropriate IN_CONTENT_SEARCH fact`() {
+        val url = "https://www.google.com/search?q=aaa&client=firefox-b-m&channel=tsTest&oq=random"
+        val facts = mutableListOf<Fact>()
+        Facts.registerProcessor(object : FactProcessor {
+            override fun process(fact: Fact) {
+                facts.add(fact)
+            }
+        })
+
+        telemetry.trackPartnerUrlTypeMetric(url, listOf())
+
+        assertEquals(1, facts.size)
+        assertEquals(Component.FEATURE_SEARCH, facts[0].component)
+        assertEquals(Action.INTERACTION, facts[0].action)
+        assertEquals(InContentTelemetry.IN_CONTENT_SEARCH, facts[0].item)
+        assertEquals("google.in-content.sap-follow-on.firefox-b-m", facts[0].value)
+    }
+
     @Test
     fun `GIVEN a Baidu sap-follow-on WHEN trackPartnerUrlTypeMetric is called THEN emit an appropriate IN_CONTENT_SEARCH fact`() {
         val url = "https://m.baidu.com/s?from=1000969a&word=aaa&oq=random"