Enable PLI as the default.

Description:
Enable PLI as the default option.

BUG=webrtc issue 744
TEST=local
Review URL: https://webrtc-codereview.appspot.com/735008

git-svn-id: http://webrtc.googlecode.com/svn/trunk@2610 4adac7df-926f-26a2-2b94-8c16560cd09d

src/video_engine/main/test/android_test/src/org/webrtc/videoengineapp/ViEAndroidJavaAPI.java

@@ -75,7 +75,7 @@ public class ViEAndroidJavaAPI {
     // NACK
     public native int EnableNACK(int channel, boolean enable);
 
-    //PLI for H.264
+    // PLI
     public native int EnablePLI(int channel, boolean enable);
 
     // Enable stats callback

src/video_engine/main/test/android_test/src/org/webrtc/videoengineapp/WebRTCDemo.java

@@ -580,6 +580,9 @@ public class WebRTCDemo extends TabActivity implements IViEAndroidCallback,
                 ret = ViEAndroidAPI.StartSend(channel);
             }
 
+            // TODO(leozwang): Add more options besides PLI, currently use pli
+            // as the default. Also check return value.
+            ret = ViEAndroidAPI.EnablePLI(channel, true);
             ret = ViEAndroidAPI.SetCallback(channel, this);
 
             if (enableVideoSend) {