More video related API fixes

android.telecom.Connection.VideoProvider
* onSetPauseImage takes Uri instead of String
* changeCallDataUsage -> setCallDataUsage
* add quality constants to changeVideoQuality() docs

android.telecom.InCallService.VideoCall
* setPauseImage takes Uri instea dof String

android.telecom.VideoProfile.VideoState
* Move constants to VideoProfile, prefix with STATE_

Bug: 21040387
Bug: 21066505
Change-Id: I764e72aced9d1e2d30d6d0cf0862100860d47c79

telecomm/java/android/telecom/VideoCallImpl.java

@@ -16,6 +16,7 @@
 
 package android.telecom;
 
+import android.net.Uri;
 import android.os.Handler;
 import android.os.IBinder;
 import android.os.Looper;
@@ -302,7 +303,7 @@ public class VideoCallImpl extends VideoCall {
     }
 
     /** {@inheritDoc} */
-    public void setPauseImage(String uri) {
+    public void setPauseImage(Uri uri) {
         try {
             mVideoProvider.setPauseImage(uri);
         } catch (RemoteException e) {