jni_generator: handle inner class natives properly.

base/android/jni_generator/sample_for_tests.cc

Index: base/android/jni_generator/sample_for_tests.cc
diff --git a/base/android/jni_generator/sample_for_tests.cc b/base/android/jni_generator/sample_for_tests.cc
index 08e5ac9666474c442013d4ea0ae876f150929709..56c07121eb761db49a69e462600f5c3ec8bd3124 100644
--- a/base/android/jni_generator/sample_for_tests.cc
+++ b/base/android/jni_generator/sample_for_tests.cc
@@ -100,6 +100,10 @@ static ScopedJavaLocalRef<jobject> GetNonPODDatatype(
   return ScopedJavaLocalRef<jobject>();
 }
 
+static jint GetInnerIntFunction(JNIEnv*, const JavaParamRef<jclass>&) {
+  return 0;
+}
+
 } // namespace android
 } // namespace base