jni_generator: Pass object parameters as JavaParamRef.

chrome/browser/android/omnibox/answers_image_bridge.cc

Index: chrome/browser/android/omnibox/answers_image_bridge.cc
diff --git a/chrome/browser/android/omnibox/answers_image_bridge.cc b/chrome/browser/android/omnibox/answers_image_bridge.cc
index 41d215d431167b83005f89908fdcda2200005b3e..910f48d4a98827676b50022378216fa40567b6ca 100644
--- a/chrome/browser/android/omnibox/answers_image_bridge.cc
+++ b/chrome/browser/android/omnibox/answers_image_bridge.cc
@@ -52,8 +52,8 @@ class AnswersImageObserverAndroid : public BitmapFetcherService::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);
@@ -63,10 +63,10 @@ static void CancelAnswersImageRequest(JNIEnv* env,
 }
 
 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 =