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

content/public/browser/content_browser_client.cc

Index: content/public/browser/content_browser_client.cc
diff --git a/content/public/browser/content_browser_client.cc b/content/public/browser/content_browser_client.cc
index 6cbb744a4ea1f4b287ca77411cc7e4cca2ccb8cd..b2db49f18bb0c635df42b15580e6a08c7606e741 100644
--- a/content/public/browser/content_browser_client.cc
+++ b/content/public/browser/content_browser_client.cc
@@ -376,8 +376,14 @@ std::string ContentBrowserClient::GetServiceUserIdForBrowserContext(
   return base::GenerateGUID();
 }
 
-PresentationServiceDelegate*
-ContentBrowserClient::GetPresentationServiceDelegate(
+ControllerPresentationServiceDelegate*
+ContentBrowserClient::GetControllerPresentationServiceDelegate(
+    WebContents* web_contents) {
+  return nullptr;
+}
+
+ReceiverPresentationServiceDelegate*
+ContentBrowserClient::GetReceiverPresentationServiceDelegate(
     WebContents* web_contents) {
   return nullptr;
 }