Update to Chromium //base at Chromium commit 3e81715e6d3a4324362635aea46ce1f1a163cca1.

android/jni_generator/sample_for_tests.cc

Index: android/jni_generator/sample_for_tests.cc
diff --git a/android/jni_generator/sample_for_tests.cc b/android/jni_generator/sample_for_tests.cc
index 8ba77c61ff669cb8fbcb7037251e16a5eb12fb98..c5820ab6266a308c0b9e4d1462a3ce4c2e8b2418 100644
--- a/android/jni_generator/sample_for_tests.cc
+++ b/android/jni_generator/sample_for_tests.cc
@@ -82,8 +82,8 @@ static jfloat GetFloatFunction(JNIEnv*, jclass) {
 static void SetNonPODDatatype(JNIEnv*, jobject, jobject) {
 }
 
-static jobject GetNonPODDatatype(JNIEnv*, jobject) {
-  return NULL;
+static ScopedJavaLocalRef<jobject> GetNonPODDatatype(JNIEnv*, jobject) {
+  return ScopedJavaLocalRef<jobject>();
 }
 
 static jint InnerFunction(JNIEnv*, jclass) {