Provide an API to dart:developer to control the web server hosting the Service Protocol

runtime/vm/service_isolate.h

Index: runtime/vm/service_isolate.h
diff --git a/runtime/vm/service_isolate.h b/runtime/vm/service_isolate.h
index c79d88be2752e9e0a799aa402b03568399a0bdb2..fdcb26c9dd2f93b1d66f79b8db61560d6435c81b 100644
--- a/runtime/vm/service_isolate.h
+++ b/runtime/vm/service_isolate.h
@@ -13,6 +13,7 @@
 namespace dart {
 
 class ObjectPointerVisitor;
+class SendPort;
 
 class ServiceIsolate : public AllStatic {
  public:
@@ -36,6 +37,9 @@ class ServiceIsolate : public AllStatic {
 
   static void BootVmServiceLibrary();
 
+  static void RequestServerInfo(const SendPort& sp);
+  static void ControlWebServer(const SendPort& sp, bool enable);
+
   static void SetServerAddress(const char* address);
 
   // Returns the server's web address or NULL if none is running.