Pass method parameters as JavaParamRef in android_webview.

android_webview/native/aw_http_auth_handler.cc

Index: android_webview/native/aw_http_auth_handler.cc
diff --git a/android_webview/native/aw_http_auth_handler.cc b/android_webview/native/aw_http_auth_handler.cc
index 700270a78a4a73f40a32978be9274ca6d70871a0..8f4293b8f48dc68156b4d8ccb525d402ade3a06e 100644
--- a/android_webview/native/aw_http_auth_handler.cc
+++ b/android_webview/native/aw_http_auth_handler.cc
@@ -38,9 +38,9 @@ AwHttpAuthHandler:: ~AwHttpAuthHandler() {
 }
 
 void AwHttpAuthHandler::Proceed(JNIEnv* env,
-                                jobject obj,
-                                jstring user,
-                                jstring password) {
+                                const JavaParamRef<jobject>& obj,
+                                const JavaParamRef<jstring>& user,
+                                const JavaParamRef<jstring>& password) {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   if (login_delegate_.get()) {
     login_delegate_->Proceed(ConvertJavaStringToUTF16(env, user),
@@ -49,7 +49,7 @@ void AwHttpAuthHandler::Proceed(JNIEnv* env,
   }
 }
 
-void AwHttpAuthHandler::Cancel(JNIEnv* env, jobject obj) {
+void AwHttpAuthHandler::Cancel(JNIEnv* env, const JavaParamRef<jobject>& obj) {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   if (login_delegate_.get()) {
     login_delegate_->Cancel();