jni_generator: Pass object parameters as JavaParamRef.

base/android/jni_generator/testMultipleJNIAdditionalImport.golden

Index: base/android/jni_generator/testMultipleJNIAdditionalImport.golden
diff --git a/base/android/jni_generator/testMultipleJNIAdditionalImport.golden b/base/android/jni_generator/testMultipleJNIAdditionalImport.golden
index eb15190a211793ea436c1275bf9a83083e8e4dfa..6de8c219f551e4add8f8d75b9abdb094682235a2 100644
--- a/base/android/jni_generator/testMultipleJNIAdditionalImport.golden
+++ b/base/android/jni_generator/testMultipleJNIAdditionalImport.golden
@@ -27,15 +27,17 @@ jclass g_Foo_clazz = NULL;
 
 // Step 2: method stubs.
 
-static void DoSomething(JNIEnv* env, jclass jcaller,
-    jobject callback1,
-    jobject callback2);
+static void DoSomething(JNIEnv* env, const JavaParamRef<jclass>& jcaller,
+    const JavaParamRef<jobject>& callback1,
+    const JavaParamRef<jobject>& callback2);
 
 static void Java_org_chromium_foo_Foo_nativeDoSomething(JNIEnv* env, jclass
     jcaller,
     jobject callback1,
     jobject callback2) {
-  return DoSomething(env, jcaller, callback1, callback2);
+  return DoSomething(env, JavaParamRef<jclass>(env, jcaller),
+      JavaParamRef<jobject>(env, callback1), JavaParamRef<jobject>(env,
+      callback2));
 }
 
 static base::subtle::AtomicWord g_Foo_calledByNative = 0;