Implement AndroidTextureBuffer::NativeToI420.

talk/app/webrtc/java/jni/androidvideocapturer_jni.h

Index: talk/app/webrtc/java/jni/androidvideocapturer_jni.h
diff --git a/talk/app/webrtc/java/jni/androidvideocapturer_jni.h b/talk/app/webrtc/java/jni/androidvideocapturer_jni.h
index 96def5eae34e3b72cff636cc912bccca9b0eab4f..fffd7f567e738b999f0b983150557fc6d23dae41 100644
--- a/talk/app/webrtc/java/jni/androidvideocapturer_jni.h
+++ b/talk/app/webrtc/java/jni/androidvideocapturer_jni.h
@@ -48,7 +48,9 @@ class AndroidVideoCapturerJni : public webrtc::AndroidVideoCapturerDelegate {
  public:
   static int SetAndroidObjects(JNIEnv* jni, jobject appliction_context);
 
-  AndroidVideoCapturerJni(JNIEnv* jni, jobject j_video_capturer);
+  AndroidVideoCapturerJni(JNIEnv* jni,
+                          jobject j_video_capturer,
+                          jobject j_surface_texture_helper);
 
   void Start(int width, int height, int framerate,
              webrtc::AndroidVideoCapturer* capturer) override;
@@ -64,6 +66,7 @@ class AndroidVideoCapturerJni : public webrtc::AndroidVideoCapturerDelegate {
                       const NativeHandleImpl& handle);
   void OnOutputFormatRequest(int width, int height, int fps);
 
+  jobject GetSurfaceHelper() { return *j_surface_texture_helper_; }
  protected:
   ~AndroidVideoCapturerJni();
 
@@ -85,7 +88,8 @@ class AndroidVideoCapturerJni : public webrtc::AndroidVideoCapturerDelegate {
       void (webrtc::AndroidVideoCapturer::*method)(Args...),
       typename Identity<Args>::type... args);
 
-  const ScopedGlobalRef<jobject> j_capturer_global_;
+  const ScopedGlobalRef<jobject> j_video_capturer_;
+  const ScopedGlobalRef<jobject> j_surface_texture_helper_;
   const ScopedGlobalRef<jclass> j_video_capturer_class_;
   const ScopedGlobalRef<jclass> j_observer_class_;