[Presentation API, MediaRouter] Routing from media sink selection to route creation.

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

Index: chrome/android/java/src/org/chromium/chrome/browser/media/router/cast/MediaSink.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/media/router/cast/MediaSink.java b/chrome/android/java/src/org/chromium/chrome/browser/media/router/cast/MediaSink.java
index 3ea7e098c7aabc1d9efe8401f7a8a216e53e4be1..382c6e69ccfccede1409cedd8e7709bc4f8af29a 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/media/router/cast/MediaSink.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/media/router/cast/MediaSink.java
@@ -5,6 +5,7 @@
 package org.chromium.chrome.browser.media.router.cast;
 
 import android.support.v7.media.MediaRouter;
+import android.support.v7.media.MediaRouter.RouteInfo;
 
 /**
  * A common descriptor of a device that can present some URI.
@@ -14,19 +15,33 @@ public class MediaSink {
     private final String mId;
     private final String mName;
 
+    /**
+     * Constructor.
+     * @param id A unique identifier of the sink.
+     * @param name A user friendly name of the sink.
+     */
     public MediaSink(String id, String name) {
         mId = id;
         mName = name;
     }
 
+    /**
+     * @return The unique identifier of the sink.
+     */
     public String getId() {
         return mId;
     }
 
+    /**
+     * @return The user friendly name of the sink.
+     */
     public String getName() {
         return mName;
     }
 
+    /**
+     * @return The valid URN representing the sink.
+     */
     public String getUrn() {
         return CAST_SINK_URN_PREFIX + getId();
     }
@@ -50,14 +65,18 @@ public class MediaSink {
         return result;
     }
 
-    static MediaSink fromRoute(MediaRouter.RouteInfo route) {
-        return new MediaSink(
-            route.getId(),
-            route.getName());
-    }
-
     @Override
     public String toString() {
         return String.format("MediaSink: %s, %s", getId(), getName());
     }
+
+    /**
+     * @param route The route information provided by Android.
+     * @return A new MediaSink instance corresponding to the specified {@link RouteInfo}.
+     */
+    public static MediaSink fromRoute(MediaRouter.RouteInfo route) {
+        return new MediaSink(
+            route.getId(),
+            route.getName());
+    }
 }