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

content/renderer/presentation/presentation_dispatcher.h

Index: content/renderer/presentation/presentation_dispatcher.h
diff --git a/content/renderer/presentation/presentation_dispatcher.h b/content/renderer/presentation/presentation_dispatcher.h
index 057a91d584802d96f8127e59eee5121f9cc372db..96fddb4c429153857f4dba0cdd252a0631437bcb 100644
--- a/content/renderer/presentation/presentation_dispatcher.h
+++ b/content/renderer/presentation/presentation_dispatcher.h
@@ -33,6 +33,7 @@ class WebVector;
 
 namespace content {
 
+class PresentationConnectionProxy;

[imcheng, 2016/11/01 17:20:30]

nit: add blank line below

[zhaobin, 2016/11/02 03:55:48]

Done.

 // PresentationDispatcher is a delegate for Presentation API messages used by
 // Blink. It forwards the calls to the Mojo PresentationService.
 class CONTENT_EXPORT PresentationDispatcher
@@ -43,6 +44,13 @@ class CONTENT_EXPORT PresentationDispatcher
   explicit PresentationDispatcher(RenderFrame* render_frame);
   ~PresentationDispatcher() override;
 
+  static blink::mojom::SessionMessagePtr ToMojoTextMessage(

[imcheng, 2016/11/01 17:20:30]

do these need to be public static methods or can they just be functions in
anonymous namespace?

[zhaobin, 2016/11/02 03:55:48]

Done.

+      const blink::WebString& message);
+  static blink::mojom::SessionMessagePtr ToMojoBinaryMessage(
+      blink::mojom::PresentationMessageType type,
+      const uint8_t* data,
+      size_t length);
+
  private:
   struct SendMessageRequest {
     SendMessageRequest(blink::mojom::PresentationSessionInfoPtr session_info,
@@ -125,7 +133,8 @@ class CONTENT_EXPORT PresentationDispatcher
       blink::mojom::PresentationSessionInfoPtr session_info,
       blink::mojom::PresentationErrorPtr error);
   void OnReceiverConnectionAvailable(
-      blink::mojom::PresentationSessionInfoPtr) override;
+      blink::mojom::PresentationSessionInfoPtr,
+      blink::mojom::PresentationConnectionPtr) override;
 
   // Call to PresentationService to send the message in |request|.
   // |session_info| and |message| of |reuqest| will be consumed.
@@ -136,6 +145,9 @@ class CONTENT_EXPORT PresentationDispatcher
   void ConnectToPresentationServiceIfNeeded();
 
   void UpdateListeningState();
+  std::unique_ptr<PresentationConnectionProxy>
+  CreateAndSetControllerConnectionProxy(
+      blink::mojom::PresentationSessionInfoPtr session_info);
 
   // Used as a weak reference. Can be null since lifetime is bound to the frame.
   blink::WebPresentationController* controller_;