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

(exposed_services is going to be removed.)

R=vardhan@google.com
BUG=#762

Review URL: https://codereview.chromium.org/1964673002 .

services/js/echo_apptest.cc

diff --git a/services/js/echo_apptest.cc b/services/js/echo_apptest.cc
index 6109d5c..9d7f343 100644
--- a/services/js/echo_apptest.cc
+++ b/services/js/echo_apptest.cc
@@ -73,14 +73,5 @@
   echo_service_->Quit();
 }
 
-// Verify that a JS app's ServiceProvider can request and provide services.
-// This test exercises the same code paths as examples/js/share_echo.js.
-TEST_F(JSEchoTest, ShareEchoService) {
-  bool returned_value = false;
-  EXPECT_TRUE(echo_service_->ShareEchoService(&returned_value));
-  EXPECT_TRUE(returned_value);
-  echo_service_->Quit();
-}
-
 } // namespace
 } // namespace js

services/js/test/echo.js

diff --git a/services/js/test/echo.js b/services/js/test/echo.js
index 1780864..871837c 100644
--- a/services/js/test/echo.js
+++ b/services/js/test/echo.js
@@ -17,23 +17,6 @@
       return Promise.resolve({value: s});
     }
 
-    // This method is only used by the ShareEchoService test.
-    shareEchoService() {
-      var echoTargetURL = echoApp.url.replace("echo.js", "echo_target.js");
-      var targetSP = echoApp.shell.connectToApplication(echoTargetURL);
-      // This Promise resolves after echo_target.js has called the echoString()
-      // method defined on the local EchoService implementation. For its part,
-      // the target application quits after one successful call to echoString().
-      return new Promise(function(resolve) {
-        targetSP.provideService(EchoService, function() {
-          this.echoString = function(s) {
-            resolve({ok: true});
-            return Promise.resolve({value: s});
-          }
-        });
-      });
-    }
-
     quit() {
       echoApp.quit();
     }

services/js/test/echo_service.mojom

diff --git a/services/js/test/echo_service.mojom b/services/js/test/echo_service.mojom
index bb610f7..c085107 100644
--- a/services/js/test/echo_service.mojom
+++ b/services/js/test/echo_service.mojom
@@ -8,12 +8,6 @@
 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();
 };