jni_generator: Pass object parameters as JavaParamRef.

chrome/browser/android/omnibox/answers_image_bridge.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/android/omnibox/answers_image_bridge.h"
 
 #include <jni.h>
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_string.h"
@@ skipping 34 matching lines @@
         env, java_answers_image_observer_.obj(), java_bitmap.obj());
   }
 
  private:
   base::android::ScopedJavaGlobalRef<jobject> java_answers_image_observer_;
 };
 
 }  // namespace
 
 static void CancelAnswersImageRequest(JNIEnv* env,
-                                      jclass,
-                                      jobject java_profile,
+                                      const JavaParamRef<jclass>&,
+                                      const JavaParamRef<jobject>& java_profile,
                                       jint java_request_id) {
   Profile* profile = ProfileAndroid::FromProfileAndroid(java_profile);
   DCHECK(profile);
   BitmapFetcherService* bitmap_fetcher_service =
       BitmapFetcherServiceFactory::GetForBrowserContext(profile);
   bitmap_fetcher_service->CancelRequest(java_request_id);
 }
 
 static int RequestAnswersImage(JNIEnv* env,
-                               jclass,
-                               jobject java_profile,
-                               jstring java_url,
-                               jobject java_callback) {
+                               const JavaParamRef<jclass>&,
+                               const JavaParamRef<jobject>& java_profile,
+                               const JavaParamRef<jstring>& java_url,
+                               const JavaParamRef<jobject>& java_callback) {
   Profile* profile = ProfileAndroid::FromProfileAndroid(java_profile);
   DCHECK(profile);
   BitmapFetcherService* bitmap_fetcher_service =
       BitmapFetcherServiceFactory::GetForBrowserContext(profile);
   std::string url;
   base::android::ConvertJavaStringToUTF8(env, java_url, &url);
   return bitmap_fetcher_service->RequestImage(
       GURL(url), new AnswersImageObserverAndroid(env, java_callback));
 }
 
 // static
 bool RegisterAnswersImageBridge(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }