[Presentation API] (5th) (1-UA) integrate controller and receiver side for 1-UA messaging

content/renderer/presentation/test_presentation_connection.cc

 // Copyright 2017 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 "content/renderer/presentation/test_presentation_connection.h"
 
 #include "third_party/WebKit/public/platform/WebString.h"
 #include "third_party/WebKit/public/platform/modules/presentation/WebPresentationConnectionProxy.h"
 #include "third_party/WebKit/public/platform/modules/presentation/WebPresentationController.h"
 
 namespace content {
 
 TestPresentationConnection::TestPresentationConnection() = default;
 
 TestPresentationConnection::~TestPresentationConnection() = default;
 
 void TestPresentationConnection::bindProxy(
     std::unique_ptr<blink::WebPresentationConnectionProxy> proxy) {
   proxy_ = std::move(proxy);
 }
 
+blink::WebPresentationConnectionProxy* TestPresentationConnection::proxy() {
+  return proxy_.get();
+}
+
 }  // namespace content