Delete JSEchoTest.ShareEchoService -- it tests the wrong-way ServiceProvider (exposed_services).

services/js/test/echo_service.mojom

Index: services/js/test/echo_service.mojom
diff --git a/services/js/test/echo_service.mojom b/services/js/test/echo_service.mojom
index bb610f790921c245e12147a05613fc84196a05e4..c085107ed5aedc86213faa069a47f90eacd8853e 100644
--- a/services/js/test/echo_service.mojom
+++ b/services/js/test/echo_service.mojom
@@ -8,12 +8,6 @@ module mojo;
 interface EchoService {
   EchoString(string? value) => (string? value);
 
-  // Provide the EchoService to the echo_target.js
-  // application. The full URL for echo_target.js is
-  // computed relative to this application's URL.
-  // Return after echo_target has called EchoString().
-  ShareEchoService() => (bool ok);
-
   // Make it stop.
   Quit();
 };