Make combined native/manual JNI registration work for clang.

base/android/jni_generator/testNativeExportsOption.golden

Index: base/android/jni_generator/testNativeExportsOption.golden
diff --git a/base/android/jni_generator/testNativeExportsOption.golden b/base/android/jni_generator/testNativeExportsOption.golden
index a4953cc3ea4a5b4ac2a48b6f7e51ac3be6718f19..bfed0e372de2bbb5d11600efc976380d1558fa65 100644
--- a/base/android/jni_generator/testNativeExportsOption.golden
+++ b/base/android/jni_generator/testNativeExportsOption.golden
@@ -30,17 +30,21 @@ extern "C" {
 
 static jint Init(JNIEnv* env, jobject jcaller);
 
-__attribute__((visibility("default"), alias("Init")))
+__attribute__((visibility("default")))
 jint
     Java_org_chromium_example_jni_1generator_SampleForTests_00024MyInnerClass_nativeInit(JNIEnv*
-    env, jobject jcaller);
+    env, jobject jcaller) {
+  return Init(env, jcaller);
+}
 
 static jint Init(JNIEnv* env, jobject jcaller);
 
-__attribute__((visibility("default"), alias("Init")))
+__attribute__((visibility("default")))
 jint
     Java_org_chromium_example_jni_1generator_SampleForTests_00024MyOtherInnerClass_nativeInit(JNIEnv*
-    env, jobject jcaller);
+    env, jobject jcaller) {
+  return Init(env, jcaller);
+}
 
 };  // extern "C"