jni_generator: Pass object parameters as JavaParamRef.

chrome/browser/android/feedback/connectivity_checker.cc

 // Copyright 2015 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/feedback/connectivity_checker.h"
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_string.h"
 #include "base/android/scoped_java_ref.h"
 #include "base/message_loop/message_loop.h"
@@ skipping 146 matching lines @@
     return;
   is_being_destroyed_ = true;
   url_fetcher_.reset();
   ExecuteCallback(java_callback_.obj(), CONNECTIVITY_CHECK_RESULT_TIMEOUT);
   base::MessageLoop::current()->DeleteSoon(FROM_HERE, this);
 }
 
 }  // namespace
 
 void CheckConnectivity(JNIEnv* env,
-                       jclass clazz,
-                       jobject j_profile,
-                       jstring j_url,
+                       const JavaParamRef<jclass>& clazz,
+                       const JavaParamRef<jobject>& j_profile,
+                       const JavaParamRef<jstring>& j_url,
                        jlong j_timeout_ms,
-                       jobject j_callback) {
+                       const JavaParamRef<jobject>& j_callback) {
   Profile* profile = ProfileAndroid::FromProfileAndroid(j_profile);
   if (!profile) {
     PostCallback(env, j_callback, CONNECTIVITY_CHECK_RESULT_ERROR);
     return;
   }
   GURL url(base::android::ConvertJavaStringToUTF8(env, j_url));
   if (!url.is_valid()) {
     PostCallback(env, j_callback, CONNECTIVITY_CHECK_RESULT_ERROR);
     return;
   }
 
   // This object will be deleted when the connectivity check has completed.
   ConnectivityChecker* connectivity_checker = new ConnectivityChecker(
       profile, url, base::TimeDelta::FromMilliseconds(j_timeout_ms),
       base::android::ScopedJavaLocalRef<jobject>(env, j_callback));
   connectivity_checker->StartAsyncCheck();
 }
 
-jboolean IsUrlValid(JNIEnv* env, jclass clazz, jstring j_url) {
+jboolean IsUrlValid(JNIEnv* env,
+                    const JavaParamRef<jclass>& clazz,
+                    const JavaParamRef<jstring>& j_url) {
   GURL url(base::android::ConvertJavaStringToUTF8(env, j_url));
   return url.is_valid();
 }
 
 bool RegisterConnectivityChecker(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
 }  // namespace android
 }  // namespace chrome