Add support for scaling textures in AndroidVideoCapturer.

talk/app/webrtc/java/android/org/webrtc/VideoCapturerAndroid.java

Index: talk/app/webrtc/java/android/org/webrtc/VideoCapturerAndroid.java
diff --git a/talk/app/webrtc/java/android/org/webrtc/VideoCapturerAndroid.java b/talk/app/webrtc/java/android/org/webrtc/VideoCapturerAndroid.java
index 9fc4dd1f6b64151c8eae37e7539220aa86214d45..d296cc83e8e55f63a396a485fd3a49b53fed1ab5 100644
--- a/talk/app/webrtc/java/android/org/webrtc/VideoCapturerAndroid.java
+++ b/talk/app/webrtc/java/android/org/webrtc/VideoCapturerAndroid.java
@@ -300,6 +300,8 @@ public class VideoCapturerAndroid extends VideoCapturer implements
 
   // Requests a new output format from the video capturer. Captured frames
   // by the camera will be scaled/or dropped by the video capturer.
+  // It does not matter if width and height are flipped. I.E, |width| = 640, |height| = 480 produce
+  // the same result as |width| = 480, |height| = 640.
   // TODO(magjed/perkj): Document what this function does. Change name?
   public void onOutputFormatRequest(final int width, final int height, final int framerate) {
     cameraThreadHandler.post(new Runnable() {