Bug 1058133: Telemetry for tracking protection events (r=bmcbride)

browser/base/content/browser.js

@@ -1279,6 +1279,12 @@ var gBrowserInit = {
           Services.telemetry.getHistogramById("MASTER_PASSWORD_ENABLED").add(mpEnabled);
         }
       }, 5000);
+
+      // Telemetry for tracking protection.
+      let tpEnabled = gPrefService
+                      .getBoolPref("privacy.trackingprotection.enabled");
+      Services.telemetry.getHistogramById("TRACKING_PROTECTION_ENABLED")
+        .add(tpEnabled);
     });
     this.delayedStartupFinished = true;
 
@@ -6496,6 +6502,10 @@ var gIdentityHandler = {
          nsIWebProgressListener.STATE_BLOCKED_TRACKING_CONTENT     |
          nsIWebProgressListener.STATE_LOADED_TRACKING_CONTENT)) {
       this.showBadContentDoorhanger(state);
+    } else {
+      // We didn't show the shield
+      Services.telemetry.getHistogramById("TRACKING_PROTECTION_SHIELD")
+        .add(0);
     }
   },
 
@@ -6517,6 +6527,19 @@ var gIdentityHandler = {
     // default
     let iconState = "bad-content-blocked-notification-icon";
 
+    // Telemetry for whether the shield was due to tracking protection or not
+    let histogram = Services.telemetry.getHistogramById
+                      ("TRACKING_PROTECTION_SHIELD");
+    if (state & Ci.nsIWebProgressListener.STATE_LOADED_TRACKING_CONTENT) {
+      histogram.add(1);
+    } else if (state &
+               Ci.nsIWebProgressListener.STATE_BLOCKED_TRACKING_CONTENT) {
+      histogram.add(2);
+    } else {
+      // The shield is due to mixed content, just keep a count so we can
+      // normalize later.
+      histogram.add(3);
+    }
     if (state &
         (Ci.nsIWebProgressListener.STATE_LOADED_MIXED_ACTIVE_CONTENT |
          Ci.nsIWebProgressListener.STATE_LOADED_TRACKING_CONTENT)) {

browser/base/content/urlbarBindings.xml

@@ -1819,6 +1819,10 @@
           // places this host on the tracking protection white list.
           Services.perms.add(normalizedUrl,
             "trackingprotection", Services.perms.ALLOW_ACTION);
+          // Telemetry for disable protection
+          let histogram = Services.telemetry.getHistogramById(
+              "TRACKING_PROTECTION_EVENTS");
+          histogram.add(1);
           BrowserReload();
         ]]></body>
       </method>
@@ -1829,6 +1833,10 @@
           // from the tracking protection white list (any list actually).
           Services.perms.remove(gBrowser.selectedBrowser.currentURI.host,
             "trackingprotection");
+          // Telemetry for enable protection
+          let histogram = Services.telemetry.getHistogramById(
+              "TRACKING_PROTECTION_EVENTS");
+          histogram.add(2);
           BrowserReload();
         ]]></body>
       </method>

toolkit/components/telemetry/Histograms.json

@@ -6506,5 +6506,22 @@
     "high": "10000000",
     "n_buckets": 10,
     "description": "Sidebar showing: seconds that the sidebar has been opened"
+  },
+  "TRACKING_PROTECTION_ENABLED": {
+    "expires_in_version": "never",
+    "kind": "boolean",
+    "description": "Whether or not a session has tracking protection enabled"
+  },
+  "TRACKING_PROTECTION_SHIELD": {
+    "expires_in_version": "never",
+    "kind": "enumerated",
+    "n_values": 4,
+    "description": "Tracking protection shield (0 = not shown, 1 = blocked, 2 = loaded, 3 = due to mixed content"
+  },
+  "TRACKING_PROTECTION_EVENTS": {
+    "expires_in_version": "never",
+    "kind": "enumerated",
+    "n_values": 3,
+    "description": "Doorhanger shown = 0, Disable = 1, Enable = 2"
   }
 }