[Cast, Android, Presentation API] Implement ReceiverAction messages.

chrome/android/java/src/org/chromium/chrome/browser/media/router/cast/CastRouteController.java

Index: chrome/android/java/src/org/chromium/chrome/browser/media/router/cast/CastRouteController.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/media/router/cast/CastRouteController.java b/chrome/android/java/src/org/chromium/chrome/browser/media/router/cast/CastRouteController.java
index 9f96b57891f69d02812b9aee82e17f42dc26a3bc..953e29f76017fa686d0c58d4e49a059c2593b301 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/media/router/cast/CastRouteController.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/media/router/cast/CastRouteController.java
@@ -331,7 +331,7 @@ public class CastRouteController implements RouteController, MediaNotificationLi
 
     @Override
     public void onStop(int actionSource) {
-        stopApplication();
+        mRouteDelegate.onSessionStopAction();
     }
 
 
@@ -869,7 +869,7 @@ public class CastRouteController implements RouteController, MediaNotificationLi
                 buildInternalMessage(type, message, clientId, sequenceNumber));
     }
 
-    private JSONArray getCapabilities(CastDevice device) {
+    static JSONArray getCapabilities(CastDevice device) {
         JSONArray jsonCapabilities = new JSONArray();
         if (device.hasCapability(CastDevice.CAPABILITY_AUDIO_IN)) {
             jsonCapabilities.put("audio_in");