Move navigations with POST or referrer to the shell.

mojo/application/public/interfaces/shell.mojom

Index: mojo/application/public/interfaces/shell.mojom
diff --git a/mojo/application/public/interfaces/shell.mojom b/mojo/application/public/interfaces/shell.mojom
index b6b131924070a1e975443720bacbb5176276ee0d..2688f0eabe266394c2d609343e0d0c87e876a341 100644
--- a/mojo/application/public/interfaces/shell.mojom
+++ b/mojo/application/public/interfaces/shell.mojom
@@ -5,13 +5,16 @@
 module mojo;
 
 import "mojo/application/public/interfaces/service_provider.mojom";
+import "network/public/interfaces/url_loader.mojom";
 
 // An interface through which a Mojo application may communicate with the Mojo
 // system and request connections to other applications.
 interface Shell {
   // Establishes a connection with another application (located at
-  // |application_url|) through which the calling application and the other
-  // application may request services from one another.
+  // |request->url|) through which the calling application and the other
+  // application may request services from one another. |application_url| is a
+  // URLRequest in case this is called for an HTTP navigation, in which case
+  // HTTP specific information like POST data, referrer header etc... needed.
   //
   // If the calling application would like to request services from the other
   // application, it should pass a valid interface request in the |services|
@@ -32,7 +35,7 @@ interface Shell {
   // "mojo:{service}", it is up to the Mojo shell to select an appropriate
   // application for the service. Currently, the shell does this based on the
   // value of its --origin flag.
-  ConnectToApplication(string application_url,
+  ConnectToApplication(URLRequest application_url,
                        ServiceProvider&? services,
                        ServiceProvider? exposed_services);
 };