[Presentation API] (5th) (1-UA) integrate controller and receiver side for 1-UA messaging

third_party/WebKit/public/platform/modules/presentation/presentation.mojom

Index: third_party/WebKit/public/platform/modules/presentation/presentation.mojom
diff --git a/third_party/WebKit/public/platform/modules/presentation/presentation.mojom b/third_party/WebKit/public/platform/modules/presentation/presentation.mojom
index 469cd72d35e559e0357ced5d46e2d8a225cd1c47..bb3251c9b4b3eb88a956b9bf57daea7b66eae53e 100644
--- a/third_party/WebKit/public/platform/modules/presentation/presentation.mojom
+++ b/third_party/WebKit/public/platform/modules/presentation/presentation.mojom
@@ -135,6 +135,9 @@ interface PresentationService {
 };
 
 interface PresentationServiceClient {
+
+  ////////////Functions here are called only on the controlling page.///////////
+
   // Called when the client tries to listen for screen availability changes for
   // presentation of |url| but it is not supported by the device or underlying
   // platform. This can also be called if the device is currently in a mode
@@ -147,6 +150,11 @@ interface PresentationServiceClient {
   // the current known state. It will then be called to notify of state updates.
   OnScreenAvailabilityUpdated(url.mojom.Url url, bool available);
 
+  // See PresentationService::SetDefaultPresentationURL.
+  OnDefaultSessionStarted(PresentationSessionInfo sessionInfo);
+
+  //////////////////////////////////////////////////////////////////////////////
+
   // Called when the state of PresentationConnection |connection| started on
   // this frame has changed to |newState|.
   OnConnectionStateChanged(PresentationSessionInfo connection,
@@ -162,9 +170,8 @@ interface PresentationServiceClient {
   OnSessionMessagesReceived(PresentationSessionInfo sessionInfo,
                             array<SessionMessage> messages);
 
-  // See PresentationService::SetDefaultPresentationURL.
-  OnDefaultSessionStarted(PresentationSessionInfo sessionInfo);
-
-  // See PresentationService::ListeningForReceiverPageRendered.
-  OnReceiverConnectionAvailable(PresentationSessionInfo sessionInfo);
+  // Called on a presentation receiver when the first presentation connection is
+  // available from the controlling page.
+  OnReceiverConnectionAvailable(PresentationSessionInfo sessionInfo,
+                                PresentationConnection connection);
 };