android: Realign stack pointer on JNI entry.

base/android/jni_generator/testSingleJNIAdditionalImport.golden

Index: base/android/jni_generator/testSingleJNIAdditionalImport.golden
diff --git a/base/android/jni_generator/testSingleJNIAdditionalImport.golden b/base/android/jni_generator/testSingleJNIAdditionalImport.golden
index 3f8c18e8542f4f104c0d2beb73b2d6338a821641..48f5a47138f3e0766c7635f01e98a90d0f4bec86 100644
--- a/base/android/jni_generator/testSingleJNIAdditionalImport.golden
+++ b/base/android/jni_generator/testSingleJNIAdditionalImport.golden
@@ -31,8 +31,8 @@ static void DoSomething(JNIEnv* env, const base::android::JavaParamRef<jclass>&
     jcaller,
     const base::android::JavaParamRef<jobject>& callback);
 
-extern "C" __attribute__((visibility("default")))
-void Java_org_chromium_foo_Foo_nativeDoSomething(JNIEnv* env, jclass jcaller,
+JNI_GENERATOR_EXPORT void Java_org_chromium_foo_Foo_nativeDoSomething(JNIEnv*
+    env, jclass jcaller,
     jobject callback) {
   return DoSomething(env, base::android::JavaParamRef<jclass>(env, jcaller),
       base::android::JavaParamRef<jobject>(env, callback));