[Presentation API] return valid WebPresentationConnection object in PresentationReceiver

third_party/WebKit/Source/modules/presentation/PresentationReceiverTest.cpp

 // Copyright 2016 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 "modules/presentation/PresentationReceiver.h"
 
 #include "bindings/core/v8/ScriptPromiseResolver.h"
 #include "bindings/core/v8/V8BindingForTesting.h"
 #include "core/frame/LocalFrame.h"
 #include "core/testing/DummyPageHolder.h"
@@ skipping 184 matching lines @@
   auto receiver = new PresentationReceiver(&scope.frame(), nullptr);
 
   StrictMock<MockEventListener>* eventHandler =
       new StrictMock<MockEventListener>();
   addConnectionavailableEventListener(eventHandler, receiver);
   EXPECT_CALL(*eventHandler, handleEvent(testing::_, testing::_)).Times(0);
 
   WebPresentationSessionInfo sessionInfo(KURL(KURL(), "http://example.com"),
                                          "id");
   // Receive first connection.
-  receiver->onReceiverConnectionAvailable(sessionInfo);
+  auto* connection1 = receiver->onReceiverConnectionAvailable(sessionInfo);
+  EXPECT_TRUE(connection1);
+
   // Receive second connection.
-  receiver->onReceiverConnectionAvailable(sessionInfo);
+  auto* connection2 = receiver->onReceiverConnectionAvailable(sessionInfo);
+  EXPECT_TRUE(connection2);
 
   receiver->connectionList(scope.getScriptState());
   verifyConnectionListPropertyState(ScriptPromisePropertyBase::Resolved,
                                     receiver);
   verifyConnectionListSize(2, receiver);
 }
 
 TEST_F(PresentationReceiverTest, CreateReceiver) {
   MockWebPresentationClient client;
   EXPECT_CALL(client, setReceiver(testing::_));
 
   V8TestingScope scope;
   new PresentationReceiver(&scope.frame(), &client);
 }
 
 }  // namespace blink