Android: Generate Java -> C++ JNI code for VideoEncoder

This is the first CL that tries generating Java -> C++ JNI code.

Bug: webrtc:8278
Change-Id: I1ff0df10db0f80a3c84a61a4e82be8f713690a69
Reviewed-on: https://webrtc-review.googlesource.com/20873
Commit-Queue: Magnus Jedvert <magjed@webrtc.org>
Reviewed-by: Sami Kalliomäki <sakal@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#20592}
diff --git a/sdk/android/src/jni/videoencoderwrapper.h b/sdk/android/src/jni/videoencoderwrapper.h
index 7717eb8..06f5903 100644
--- a/sdk/android/src/jni/videoencoderwrapper.h
+++ b/sdk/android/src/jni/videoencoderwrapper.h
@@ -55,6 +55,7 @@
 
   // Should only be called by JNI.
   void OnEncodedFrame(JNIEnv* jni,
+                      jobject j_caller,
                       jobject j_buffer,
                       jint encoded_width,
                       jint encoded_height,