Android: Fix frame dropping for texture frames

webrtc/api/java/jni/surfacetexturehelper_jni.h

 /*
  *  Copyright 2015 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 31 matching lines @@
   static rtc::scoped_refptr<SurfaceTextureHelper> create(
       JNIEnv* jni, const char* thread_name, jobject j_egl_context);
 
   jobject GetJavaSurfaceTextureHelper() const;
 
   rtc::scoped_refptr<webrtc::VideoFrameBuffer> CreateTextureFrame(
       int width,
       int height,
       const NativeHandleImpl& native_handle);
 
+  // May be called on arbitrary thread.
+  void ReturnTextureFrame() const;
+
  protected:
   ~SurfaceTextureHelper();
   SurfaceTextureHelper(JNIEnv* jni, jobject j_surface_texture_helper);
 
  private:
-  //  May be called on arbitrary thread.
-  void ReturnTextureFrame() const;
-
   const ScopedGlobalRef<jobject> j_surface_texture_helper_;
   const jmethodID j_return_texture_method_;
 };
 
 }  // namespace webrtc_jni
 
 #endif  // WEBRTC_API_JAVA_JNI_SURFACETEXTUREHELPER_JNI_H_