Move matrix from VideoFrame to TextureBuffer.

webrtc/sdk/android/src/java/org/webrtc/I420BufferImpl.java

Index: webrtc/sdk/android/src/java/org/webrtc/I420BufferImpl.java
diff --git a/webrtc/sdk/android/src/java/org/webrtc/I420BufferImpl.java b/webrtc/sdk/android/src/java/org/webrtc/I420BufferImpl.java
index 09c07822714a1d4a98b986c67b78819d5f33ea68..c85f7074d5f80a967785d19b4d46904b911bb62a 100644
--- a/webrtc/sdk/android/src/java/org/webrtc/I420BufferImpl.java
+++ b/webrtc/sdk/android/src/java/org/webrtc/I420BufferImpl.java
@@ -125,6 +125,12 @@ class I420BufferImpl implements VideoFrame.I420Buffer {
     }
   }
 
+  @Override
+  public VideoFrame.Buffer cropAndScale(
+      int cropX, int cropY, int cropWidth, int cropHeight, int scaleWidth, int scaleHeight) {
+    return VideoFrame.cropAndScaleI420(
+        this, cropX, cropY, cropWidth, cropHeight, scaleWidth, scaleHeight);
+  }
   // Callback called when the frame is no longer referenced.
   interface ReleaseCallback {
     // Called when the frame is no longer referenced.