[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 0a3fe6fbab3f5787ee3aa291ae20a9dc337d3e25..b6a790dd07c9e98bab4a3d5c45daf2b85a1fbc65 100644
--- a/content/browser/presentation/presentation_service_impl.h
+++ b/content/browser/presentation/presentation_service_impl.h
@@ -102,6 +102,8 @@ class CONTENT_EXPORT PresentationServiceImpl
   using SessionMessagesCallback =
       mojo::Callback<void(mojo::Array<presentation::SessionMessagePtr>)>;
   using SendMessageMojoCallback = mojo::Callback<void(bool)>;
+  using GetPresenterSessionMojoCallback =
+      mojo::Callback<void(presentation::PresentationSessionInfoPtr)>;
 
   // Listener implementation owned by PresentationServiceImpl. An instance of
   // this is created when PresentationRequest.getAvailability() is resolved.
@@ -194,6 +196,8 @@ class CONTENT_EXPORT PresentationServiceImpl
   void ListenForSessionStateChange() override;
   void ListenForSessionMessages(
       presentation::PresentationSessionInfoPtr session) override;
+  void GetPresenterSession(
+      const GetPresenterSessionMojoCallback& callback) override;
 
   // Creates a binding between this object and |request|.
   void Bind(mojo::InterfaceRequest<presentation::PresentationService> request);
@@ -239,6 +243,9 @@ class CONTENT_EXPORT PresentationServiceImpl
       int request_session_id,
       const PresentationError& error);
   void OnSendMessageCallback(bool sent);
+  void OnGetPresenterSessionSuccess(
+      const content::PresentationSessionInfo& session_info);
+  void OnGetPresenterSessionError(const std::string& error);
 
   // Passed to embedder's implementation of PresentationServiceDelegate for
   // later invocation when session messages arrive.
@@ -294,6 +301,8 @@ class CONTENT_EXPORT PresentationServiceImpl
 
   scoped_ptr<SessionMessagesCallback> on_session_messages_callback_;
 
+  scoped_ptr<GetPresenterSessionMojoCallback> presenter_session_callback_;
+
   // ID of the RenderFrameHost this object is associated with.
   int render_process_id_;
   int render_frame_id_;