Android: Fix memory leak for remote MediaStream

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

Index: talk/app/webrtc/java/jni/jni_helpers.h
diff --git a/talk/app/webrtc/java/jni/jni_helpers.h b/talk/app/webrtc/java/jni/jni_helpers.h
index 03ac5298c5cfe990be8ce30c17ea5cab9d1f5288..dde713728bdf665753e6e360de6f221e12c57635 100644
--- a/talk/app/webrtc/java/jni/jni_helpers.h
+++ b/talk/app/webrtc/java/jni/jni_helpers.h
@@ -108,20 +108,6 @@ jobject NewGlobalRef(JNIEnv* jni, jobject o);
 
 void DeleteGlobalRef(JNIEnv* jni, jobject o);
 
-// Given a jweak reference, allocate a (strong) local reference scoped to the
-// lifetime of this object if the weak reference is still valid, or NULL
-// otherwise.
-class WeakRef {
- public:
-  WeakRef(JNIEnv* jni, jweak ref);
-  ~WeakRef();
-  jobject obj() { return obj_; }
-
- private:
-  JNIEnv* const jni_;
-  jobject const obj_;
-};
-
 // Scope Java local references to the lifetime of this object.  Use in all C++
 // callbacks (i.e. entry points that don't originate in a Java callstack
 // through a "native" method call).