[Presentation API] (4th)(1-UA blink side) Add WebPresentationConnection and WebPresentationConnecti…

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

Index: third_party/WebKit/Source/modules/presentation/PresentationController.cpp
diff --git a/third_party/WebKit/Source/modules/presentation/PresentationController.cpp b/third_party/WebKit/Source/modules/presentation/PresentationController.cpp
index f20aeee43302581e7ab792e1c73b4e2d32adbdba..5e8d5e553b417b946b751042c4d210dd9f4594f5 100644
--- a/third_party/WebKit/Source/modules/presentation/PresentationController.cpp
+++ b/third_party/WebKit/Source/modules/presentation/PresentationController.cpp
@@ -64,12 +64,13 @@ DEFINE_TRACE(PresentationController) {
   ContextLifecycleObserver::trace(visitor);
 }
 
-void PresentationController::didStartDefaultSession(
+WebPresentationConnection* PresentationController::didStartDefaultSession(
     const WebPresentationSessionInfo& sessionInfo) {
   if (!m_presentation || !m_presentation->defaultRequest())
-    return;
-  PresentationConnection::take(this, sessionInfo,
-                               m_presentation->defaultRequest());
+    return nullptr;
+
+  return PresentationConnection::take(this, sessionInfo,
+                                      m_presentation->defaultRequest());
 }
 
 void PresentationController::didChangeSessionState(