Bug 1004889 - Add UI telemetry for the main menu r=rnewman

mobile/android/base/BrowserApp.java

@@ -2347,6 +2347,10 @@ abstract public class BrowserApp extends GeckoApp
 
         final int itemId = item.getItemId();
 
+        // Track the menu action. We don't know much about the context, but we can use this to determine
+        // the frequency of use for various actions.
+        Telemetry.sendUIEvent(TelemetryContract.Event.ACTION, TelemetryContract.Method.MENU, getResources().getResourceEntryName(itemId));
+
         if (itemId == R.id.bookmark) {
             tab = Tabs.getInstance().getSelectedTab();
             if (tab != null) {

mobile/android/base/TelemetryContract.java

@@ -46,6 +46,9 @@ public interface TelemetryContract {
 
         // Loading a URL.
         public static final String LOAD_URL = "loadurl.1";
+
+        // Generic action, usually for tracking menu and toolbar actions.
+        public static final String ACTION = "action.1";
     }
 
     /**
@@ -65,6 +68,9 @@ public interface TelemetryContract {
         // Action occurred via an intent.
         public static final String INTENT = "intent";
 
+        // Action occurred via the main menu.
+        public static final String MENU = "menu";
+
         // Action occurred via a context menu.
         public static final String CONTEXT_MENU = "contextmenu";