Add analytics for timeline navigation

Test: Please see Google analytics and see event updates as you change
timeline navigation on winscope.
Bug: 200518515

Change-Id: I42152025d8cc2ef0b596d65fce177732eb6f9a98

tools/winscope/src/DataView.vue

@@ -160,7 +160,6 @@ export default {
       // Pass click event to parent, so that click event handler can be attached
       // to component.
       this.$emit('click', e);
-      this.newEventOccurred(e.toString());
     },
     /** Filter data view files by current show settings */
     updateShowFileTypes() {

tools/winscope/src/Overlay.vue

@@ -686,7 +686,7 @@ export default {
           navigationStyleFilter =
             (f) => f.type === fileType;
       }
-
+      this.changedNavigationStyle(this.navigationStyle);
       this.$store.commit('setNavigationFilesFilter', navigationStyleFilter);
     },
     updateVideoOverlayWidth(width) {

tools/winscope/src/main.js

@@ -411,6 +411,13 @@ Vue.mixin({
         'value': field,
       });
     },
+    changedNavigationStyle(field) {
+      this.$gtag.event("Timeline navigation changed", {
+        'event_category': "Timeline Navigation",
+        'event_label': "Winscope Interactions",
+        'value': field,
+      });
+    },
   }
 });