Fix wrong usages of ScopedJavaLocalRef::Release().

base/android/scoped_java_ref.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef BASE_ANDROID_SCOPED_JAVA_REF_H_
 #define BASE_ANDROID_SCOPED_JAVA_REF_H_
 
 #include <jni.h>
 #include <stddef.h>
 
@@ skipping 136 matching lines @@
     this->Reset(env_, other.obj());
   }
 
   template<typename U>
   void Reset(JNIEnv* env, U obj) {
     implicit_cast<T>(obj);  // Ensure U is assignable to T
     env_ = this->SetNewLocalRef(env, obj);
   }
 
   // Releases the local reference to the caller. The caller *must* delete the
-  // local reference when it is done with it.
+  // local reference when it is done with it. Note that calling a Java method
+  // is *not* a transfer of ownership and Release() should not be used.
   T Release() {
     return static_cast<T>(this->ReleaseInternal());
   }
 
  private:
   // This class is only good for use on the thread it was created on so
   // it's safe to cache the non-threadsafe JNIEnv* inside this object.
   JNIEnv* env_;
 };
 
@@ skipping 30 matching lines @@
     this->Reset(NULL, other.obj());
   }
 
   template<typename U>
   void Reset(JNIEnv* env, U obj) {
     implicit_cast<T>(obj);  // Ensure U is assignable to T
     this->SetNewGlobalRef(env, obj);
   }
 
   // Releases the global reference to the caller. The caller *must* delete the
-  // global reference when it is done with it.
+  // global reference when it is done with it. Note that calling a Java method
+  // is *not* a transfer of ownership and Release() should not be used.
   T Release() {
     return static_cast<T>(this->ReleaseInternal());
   }
 };
 
 }  // namespace android
 }  // namespace base
 
 #endif  // BASE_ANDROID_SCOPED_JAVA_REF_H_