Remove unneeded JNI registrations.

base/android/jni_generator/testCalledByNatives.golden

Index: base/android/jni_generator/testCalledByNatives.golden
diff --git a/base/android/jni_generator/testCalledByNatives.golden b/base/android/jni_generator/testCalledByNatives.golden
index 854275ccbf26d7fb10a1cff03c380126c5e19835..30509ee39d9e7a7d6d89f2731c47db211764c6f9 100644
--- a/base/android/jni_generator/testCalledByNatives.golden
+++ b/base/android/jni_generator/testCalledByNatives.golden
@@ -25,6 +25,8 @@ jclass g_InfoBar_clazz = NULL;
 
 }  // namespace
 
+extern "C"{
+
 // Step 2: method stubs.
 
 static base::subtle::AtomicWord g_TestJni_showConfirmInfoBar = 0;
@@ -487,9 +489,9 @@ static base::android::ScopedJavaLocalRef<jobject>
   jni_generator::CheckException(env);
   return base::android::ScopedJavaLocalRef<jobject>(env, ret);
 }
+};
 
 // Step 3: RegisterNatives.
-
 static bool RegisterNativesImpl(JNIEnv* env) {
   g_TestJni_clazz = reinterpret_cast<jclass>(env->NewGlobalRef(
       base::android::GetClass(env, kTestJniClassPath).obj()));