[Presentation API] Allow PresentationConnection state change to "Connecting"

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

Index: third_party/WebKit/Source/modules/presentation/PresentationConnection.cpp
diff --git a/third_party/WebKit/Source/modules/presentation/PresentationConnection.cpp b/third_party/WebKit/Source/modules/presentation/PresentationConnection.cpp
index be94c78b5cbe27f3800a4a7eeafc31a025dc6703..d7ab9b43b9df7c1128c9b193fe93feed396a2a44 100644
--- a/third_party/WebKit/Source/modules/presentation/PresentationConnection.cpp
+++ b/third_party/WebKit/Source/modules/presentation/PresentationConnection.cpp
@@ -423,8 +423,8 @@ void PresentationConnection::didChangeState(
 
   m_state = state;
   switch (m_state) {
+    // There is no event handler for state changes to Connecting.
     case WebPresentationConnectionState::Connecting:
-      NOTREACHED();
       return;
     case WebPresentationConnectionState::Connected:
       dispatchStateChangeEvent(Event::create(EventTypeNames::connect));