[Presentation API] 1-UA: send message between controller and receiver page

third_party/WebKit/Source/modules/presentation/PresentationConnectionList.h

 // 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.
 
 #ifndef PresentationConnectionList_h
 #define PresentationConnectionList_h
 
 #include "core/dom/ContextLifecycleObserver.h"
 #include "core/events/EventTarget.h"
 #include "modules/ModulesExport.h"
 #include "modules/presentation/PresentationConnection.h"
 #include "platform/heap/Handle.h"
 #include "platform/heap/Heap.h"
 
 namespace blink {
 
+class WebPresentationConnectionClient;
+
 // Implements the PresentationConnectionList interface from the Presentation API from
 // which represents set of presentation connections in the set of
 // presentation controllers.
 class MODULES_EXPORT PresentationConnectionList final
     : public EventTargetWithInlineData
     , public ContextLifecycleObserver {
     USING_GARBAGE_COLLECTED_MIXIN(PresentationConnectionList);
     DEFINE_WRAPPERTYPEINFO();
 public:
     explicit PresentationConnectionList(ExecutionContext*);
     ~PresentationConnectionList() = default;
 
     // EventTarget implementation.
     const AtomicString& interfaceName() const override;
     ExecutionContext* getExecutionContext() const override;
 
     // PresentationConnectionList.idl implementation.
     const HeapVector<Member<PresentationConnection>>& connections() const;
     DEFINE_ATTRIBUTE_EVENT_LISTENER(connectionavailable);
 
     void addConnection(PresentationConnection*);
     void dispatchConnectionAvailableEvent(PresentationConnection*);
     bool isEmpty();
+    PresentationConnection* findConnection(WebPresentationConnectionClient*);
 
     DECLARE_VIRTUAL_TRACE();
 
 protected:
     // EventTarget implementation.
     void addedEventListener(const AtomicString& eventType, RegisteredEventListener&) override;
 
 private:
     friend class PresentationReceiverTest;
 
     HeapVector<Member<PresentationConnection>> m_connections;
 };
 
 } // namespace blink
 
 #endif // PresentationConnectionList_h