Add P2 UMA metrics for Media Router user actions.

chrome/browser/resources/media_router/media_router_ui_interface.js

Index: chrome/browser/resources/media_router/media_router_ui_interface.js
diff --git a/chrome/browser/resources/media_router/media_router_ui_interface.js b/chrome/browser/resources/media_router/media_router_ui_interface.js
index fc1312f39ca0cf6e79393fff5d142ba810ab2ce0..b2324f10bf62e05e9c69c8f0ffccf2992412a22e 100644
--- a/chrome/browser/resources/media_router/media_router_ui_interface.js
+++ b/chrome/browser/resources/media_router/media_router_ui_interface.js
@@ -137,7 +137,7 @@ cr.define('media_router.browserApi', function() {
    * @param {!media_router.Route} route
    */
   function closeRoute(route) {
-    chrome.send('closeRoute', [{routeId: route.id}]);
+    chrome.send('closeRoute', [{routeId: route.id, isLocal: route.isLocal}]);
   }
 
   /**
@@ -148,6 +148,24 @@ cr.define('media_router.browserApi', function() {
   }
 
   /**
+   * Reports the index of the selected sink.
+   *
+   * @param {number} sinkIndex
+   */
+  function reportClickedSinkIndex(sinkIndex) {
+    chrome.send('reportClickedSinkIndex', [sinkIndex]);
+  }
+
+  /**
+   * Reports the cast mode that the user selected.
+   *
+   * @param {number} castModeType
+   */
+  function reportSelectedCastMode(castModeType) {
+    chrome.send('reportSelectedCastMode', [castModeType]);
+  }
+
+  /**
    * Reports the current number of sinks.
    *
    * @param {number} sinkCount
@@ -181,6 +199,8 @@ cr.define('media_router.browserApi', function() {
     closeDialog: closeDialog,
     closeRoute: closeRoute,
     onInitialDataReceived: onInitialDataReceived,
+    reportClickedSinkIndex: reportClickedSinkIndex,
+    reportSelectedCastMode: reportSelectedCastMode,
     reportSinkCount: reportSinkCount,
     requestInitialData: requestInitialData,
     requestRoute: requestRoute,