Pass JavaRef to Java methods in android_webview.

android_webview/native/aw_contents_client_bridge.cc

 // Copyright (c) 2013 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 "android_webview/native/aw_contents_client_bridge.h"
 
 #include "android_webview/common/devtools_instrumentation.h"
 #include "android_webview/native/aw_contents.h"
 #include "base/android/jni_android.h"
 #include "base/android/jni_array.h"
@@ skipping 34 matching lines @@
 void RecordClientCertificateKey(
     const scoped_refptr<net::X509Certificate>& client_cert,
     crypto::ScopedEVP_PKEY private_key) {
   DCHECK_CURRENTLY_ON(content::BrowserThread::IO);
   net::OpenSSLClientKeyStore::GetInstance()->RecordClientCertPrivateKey(
       client_cert.get(), private_key.get());
 }
 
 }  // namespace
 
-AwContentsClientBridge::AwContentsClientBridge(JNIEnv* env, jobject obj)
+AwContentsClientBridge::AwContentsClientBridge(JNIEnv* env,
+                                               const JavaRef<jobject>& obj)
     : java_ref_(env, obj) {
-  DCHECK(obj);
+  DCHECK(!obj.is_null());
   Java_AwContentsClientBridge_setNativeContentsClientBridge(
       env, obj, reinterpret_cast<intptr_t>(this));
 }
 
 AwContentsClientBridge::~AwContentsClientBridge() {
   JNIEnv* env = AttachCurrentThread();
 
   ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
   if (!obj.is_null()) {
     // Clear the weak reference from the java peer to the native object since
@@ skipping 333 matching lines @@
   pending_client_cert_request_delegates_.Remove(request_id);
 
   delete delegate;
 }
 
 bool RegisterAwContentsClientBridge(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
 }  // namespace android_webview