Android: Handle SurfaceTextureHelper ctor failure for decoder and capturer

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 20 matching lines @@
 // destroyed while a VideoFrameBuffer is in use.
 // This class is the C++ counterpart of the java class SurfaceTextureHelper.
 // Usage:
 // 1. Create an instance of this class.
 // 2. Get the Java SurfaceTextureHelper with GetJavaSurfaceTextureHelper().
 // 3. Register a listener to the Java SurfaceListener and start producing
 // new buffers.
 // 4. Call CreateTextureFrame to wrap the Java texture in a VideoFrameBuffer.
 class SurfaceTextureHelper : public rtc::RefCountInterface {
  public:
-  SurfaceTextureHelper(JNIEnv* jni,
-                       const char* thread_name,
-                       jobject j_egl_context);
+  // Might return null if creating the Java SurfaceTextureHelper fails.
+  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);
 
  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_