[Presentation API] 1-UA presentation support + presenter APIs.

content/browser/presentation/presentation_service_impl.h

Index: content/browser/presentation/presentation_service_impl.h
diff --git a/content/browser/presentation/presentation_service_impl.h b/content/browser/presentation/presentation_service_impl.h
index 44fb0e10fa36897dc12fa01d084d7f756200b6d5..b1443daf5a3c2f9a6451e2327efc4082486ad595 100644
--- a/content/browser/presentation/presentation_service_impl.h
+++ b/content/browser/presentation/presentation_service_impl.h
@@ -97,6 +97,8 @@ class CONTENT_EXPORT PresentationServiceImpl
 
   using PresentationSessionMojoCallback =
       mojo::Callback<void(blink::mojom::PresentationSessionInfoPtr)>;
+  using PresentationConnectionListMojoCallback = mojo::Callback<void(
+      mojo::Array<blink::mojom::PresentationSessionInfoPtr>)>;
   using SessionMessagesCallback =
       mojo::Callback<void(mojo::Array<blink::mojom::SessionMessagePtr>)>;
   using SendMessageMojoCallback = mojo::Callback<void(bool)>;
@@ -170,6 +172,8 @@ class CONTENT_EXPORT PresentationServiceImpl
                  const mojo::String& presentation_id) override;
   void ListenForSessionMessages(
       blink::mojom::PresentationSessionInfoPtr session) override;
+  void GetReceiverConnections(
+      const PresentationConnectionListMojoCallback& callback) override;
 
   // Creates a binding between this object and |request|.
   void Bind(mojo::InterfaceRequest<blink::mojom::PresentationService> request);
@@ -220,6 +224,8 @@ class CONTENT_EXPORT PresentationServiceImpl
       int request_session_id,
       const PresentationError& error);
   void OnSendMessageCallback(bool sent);
+  void OnReceiverConnectionAvailable(
+      const content::PresentationSessionInfo& session_info);
 
   // Calls to |delegate_| to start listening for state changes for |connection|.
   // State changes will be returned via |OnConnectionStateChanged|.
@@ -257,6 +263,7 @@ class CONTENT_EXPORT PresentationServiceImpl
 
   std::string default_presentation_url_;
 
+  // Maps from a presentation URL to a screen availability listener.
   using ScreenAvailabilityListenerMap =
       std::map<std::string, std::unique_ptr<ScreenAvailabilityListenerImpl>>;
   ScreenAvailabilityListenerMap screen_availability_listeners_;