Android: Add common function for adding/releasing native reference

webrtc/sdk/android/src/jni/jni_helpers.cc

Index: webrtc/sdk/android/src/jni/jni_helpers.cc
diff --git a/webrtc/sdk/android/src/jni/jni_helpers.cc b/webrtc/sdk/android/src/jni/jni_helpers.cc
index 9101b276f7a35211546d3fd4c81960699117ec4a..e3d52aee2ee5d0cfd228a477e2ed6a2f71dfa1ad 100644
--- a/webrtc/sdk/android/src/jni/jni_helpers.cc
+++ b/webrtc/sdk/android/src/jni/jni_helpers.cc
@@ -9,14 +9,15 @@
  */
 #include "webrtc/sdk/android/src/jni/jni_helpers.h"
 
-#include "webrtc/sdk/android/src/jni/classreferenceholder.h"
-
 #include <asm/unistd.h>
 #include <sys/prctl.h>
 #include <sys/syscall.h>
 #include <unistd.h>
 #include <vector>
 
+#include "webrtc/rtc_base/refcount.h"
+#include "webrtc/sdk/android/src/jni/classreferenceholder.h"
+
 namespace webrtc_jni {
 
 static JavaVM* g_jvm = nullptr;
@@ -385,4 +386,16 @@ bool Iterable::Iterator::AtEnd() const {
   return jni_ == nullptr || IsNull(jni_, iterator_);
 }
 
+JOW(void, JniCommon_nativeAddRef)

[sakal, 2017/08/25 13:19:39]

nit: I don't really like adding these here, can you create a new file instead?

[magjed_webrtc, 2017/08/27 20:44:32]

Done.

+(JNIEnv* jni, jclass, jlong j_native_ref_counted_pointer) {
+  reinterpret_cast<rtc::RefCountInterface*>(j_native_ref_counted_pointer)
+      ->AddRef();
+}
+
+JOW(void, JniCommon_nativeReleaseRef)
+(JNIEnv* jni, jclass, jlong j_native_ref_counted_pointer) {
+  reinterpret_cast<rtc::RefCountInterface*>(j_native_ref_counted_pointer)
+      ->Release();
+}
+
 }  // namespace webrtc_jni