Devtools: Add metrics for drawer views being shown

third_party/WebKit/Source/devtools/front_end/host/UserMetrics.js

Index: third_party/WebKit/Source/devtools/front_end/host/UserMetrics.js
diff --git a/third_party/WebKit/Source/devtools/front_end/host/UserMetrics.js b/third_party/WebKit/Source/devtools/front_end/host/UserMetrics.js
index 5f0ccb789899ff26ba627455437a7e141b64dc3b..9f2672b70d51ddf0f3a4ea2befca811d9eb957bc 100644
--- a/third_party/WebKit/Source/devtools/front_end/host/UserMetrics.js
+++ b/third_party/WebKit/Source/devtools/front_end/host/UserMetrics.js
@@ -71,6 +71,15 @@ WebInspector.UserMetrics._PanelCodes = {
     layers: 9
 }
 
+WebInspector.UserMetrics._DrawerCodes = {
+    "console": 1,
+    "animations": 2,
+    "network.config": 3,
+    "rendering": 4,
+    "sensors": 5,
+    "sources.search": 6
+}
+
 WebInspector.UserMetrics.prototype = {
     /**
      * @param {string} panelName
@@ -83,6 +92,16 @@ WebInspector.UserMetrics.prototype = {
     },
 
     /**
+     * @param {string} viewId
+     */
+    drawerShown: function(viewId)
+    {
+        var code = WebInspector.UserMetrics._DrawerCodes[viewId] || 0;
+        var size = Object.keys(WebInspector.UserMetrics._DrawerCodes).length + 1;
+        InspectorFrontendHost.recordEnumeratedHistogram("DevTools.DrawerShown", code, size);
+    },
+
+    /**
      * @param {!WebInspector.UserMetrics.Action} action
      */
     actionTaken: function(action)