Add VideoSink interface to SurfaceViewRenderer.

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

Index: webrtc/sdk/android/api/org/webrtc/VideoFrame.java
diff --git a/webrtc/sdk/android/api/org/webrtc/VideoFrame.java b/webrtc/sdk/android/api/org/webrtc/VideoFrame.java
index 69b6aa6251710fd36fc1c22d4f342d083353701c..438df0f23e124166403f3afe901e3c18ecabadc8 100644
--- a/webrtc/sdk/android/api/org/webrtc/VideoFrame.java
+++ b/webrtc/sdk/android/api/org/webrtc/VideoFrame.java
@@ -91,6 +91,9 @@ public class VideoFrame {
     if (buffer == null) {
       throw new IllegalArgumentException("buffer not allowed to be null");
     }
+    if (rotation % 90 != 0) {
+      throw new IllegalArgumentException("rotation must be a multiple of 90");
+    }
     this.buffer = buffer;
     this.rotation = rotation;
     this.timestampNs = timestampNs;
@@ -114,6 +117,20 @@ public class VideoFrame {
     return timestampNs;
   }
 
+  public int getRotatedWidth() {
+    if (rotation % 180 == 0) {
+      return buffer.getWidth();
+    }
+    return buffer.getHeight();
+  }
+
+  public int getRotatedHeight() {
+    if (rotation % 180 == 0) {
+      return buffer.getHeight();
+    }
+    return buffer.getWidth();
+  }
+
   /**
    * Reference counting of the underlying buffer.
    */