Make SurfaceTextureHelper and I420Frame public in Java.

webrtc/api/android/java/src/org/webrtc/VideoRenderer.java

 /*
  *  Copyright 2013 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 27 matching lines @@
     // Frame pointer in C++.
     private long nativeFramePointer;
 
     // rotationDegree is the degree that the frame must be rotated clockwisely
     // to be rendered correctly.
     public int rotationDegree;
 
     /**
      * Construct a frame of the given dimensions with the specified planar data.
      */
-    I420Frame(int width, int height, int rotationDegree, int[] yuvStrides, ByteBuffer[] yuvPlanes,
-        long nativeFramePointer) {
+    public I420Frame(int width, int height, int rotationDegree, int[] yuvStrides,
+        ByteBuffer[] yuvPlanes, long nativeFramePointer) {
       this.width = width;
       this.height = height;
       this.yuvStrides = yuvStrides;
       this.yuvPlanes = yuvPlanes;
       this.yuvFrame = true;
       this.rotationDegree = rotationDegree;
       this.nativeFramePointer = nativeFramePointer;
       if (rotationDegree % 90 != 0) {
         throw new IllegalArgumentException("Rotation degree not multiple of 90: " + rotationDegree);
       }
       // The convention in WebRTC is that the first element in a ByteBuffer corresponds to the
       // top-left corner of the image, but in glTexImage2D() the first element corresponds to the
       // bottom-left corner. This discrepancy is corrected by setting a vertical flip as sampling
       // matrix.
       // clang-format off
       samplingMatrix = new float[] {
           1,  0, 0, 0,
           0, -1, 0, 0,
           0,  0, 1, 0,
           0,  1, 0, 1};
       // clang-format on
     }
 
     /**
      * Construct a texture frame of the given dimensions with data in SurfaceTexture
      */
-    I420Frame(int width, int height, int rotationDegree, int textureId, float[] samplingMatrix,
-        long nativeFramePointer) {
+    public I420Frame(int width, int height, int rotationDegree, int textureId,
+        float[] samplingMatrix, long nativeFramePointer) {
       this.width = width;
       this.height = height;
       this.yuvStrides = null;
       this.yuvPlanes = null;
       this.samplingMatrix = samplingMatrix;
       this.textureId = textureId;
       this.yuvFrame = false;
       this.rotationDegree = rotationDegree;
       this.nativeFramePointer = nativeFramePointer;
       if (rotationDegree % 90 != 0) {
@@ skipping 53 matching lines @@
     }
 
     freeWrappedVideoRenderer(nativeVideoRenderer);
     nativeVideoRenderer = 0;
   }
 
   private static native long nativeWrapVideoRenderer(Callbacks callbacks);
   private static native void freeWrappedVideoRenderer(long nativeVideoRenderer);
   private static native void releaseNativeFrame(long nativeFramePointer);
 }