Add support for capturers to capture VideoFrames.

webrtc/sdk/android/api/org/webrtc/VideoCapturer.java

Index: webrtc/sdk/android/api/org/webrtc/VideoCapturer.java
diff --git a/webrtc/sdk/android/api/org/webrtc/VideoCapturer.java b/webrtc/sdk/android/api/org/webrtc/VideoCapturer.java
index 43473faa1786085830994324f42b1e030c0158c3..804560a3c373261f330c1b59b2f8353f45a9c881 100644
--- a/webrtc/sdk/android/api/org/webrtc/VideoCapturer.java
+++ b/webrtc/sdk/android/api/org/webrtc/VideoCapturer.java
@@ -11,7 +11,6 @@
 package org.webrtc;
 
 import android.content.Context;
-
 import java.util.List;
 
 // Base interface for all VideoCapturers to implement.
@@ -31,6 +30,9 @@ public interface VideoCapturer {
     // owned by VideoCapturer.
     void onTextureFrameCaptured(int width, int height, int oesTextureId, float[] transformMatrix,
         int rotation, long timestamp);
+
+    // Delivers a captured frame. Called on a Java thread owned by VideoCapturer.
+    void onFrameCaptured(VideoFrame frame);
   }
 
   /**