Make the buttons on task-page work

appengine/swarming/elements/res/imp/taskpage/task-page-demo.html

Index: appengine/swarming/elements/res/imp/taskpage/task-page-demo.html
diff --git a/appengine/swarming/elements/res/imp/taskpage/task-page-demo.html b/appengine/swarming/elements/res/imp/taskpage/task-page-demo.html
index 4376670673a510b4063be5a8e98a8ea59bb33817..88c06e8b242b2e1de73688adb176984b4a33e548 100644
--- a/appengine/swarming/elements/res/imp/taskpage/task-page-demo.html
+++ b/appengine/swarming/elements/res/imp/taskpage/task-page-demo.html
@@ -22,6 +22,8 @@
   <script type="text/javascript" src="task-result-demo.json"></script>
   <!-- Makes a var called stdouts.  It's an array of things that could be returned-->
   <script type="text/javascript" src="task-stdout-demo.json"></script>
+  <!-- Makes a var called newResponse.  It is an object.-->
+  <script type="text/javascript" src="new-task-demo.json"></script>
 
   <script type="text/javascript" charset="utf-8">
     sinon.format = function(object) {return JSON.stringify(object);}
@@ -74,6 +76,27 @@
     };
     server.respondWith("GET", /^\/_ah\/api\/swarming\/v1\/server\/details/, JSON.stringify(details));
     server.respondWith("GET", /^\/api\/swarming\/v1\/server\/details/, JSON.stringify(details));
+
+    var cancel = function(request) {
+      console.log("Cancelling", request);
+      if (!request.requestHeaders.authorization) {
+        sinon.log("You must be logged in (check your Oauth?)");
+          request.respond(403, {}, "You must be logged in (check your Oauth?)");
+        return;
+      }
+      request.respond(200, {}, "Task has been cancelled");
+    }
+
+    server.respondWith("POST", /^\/_ah\/api\/swarming\/v1\/task\/.+\/cancel/, cancel);
+    server.respondWith("POST", /^\/api\/swarming\/v1\/task\/.+\/cancel/, cancel);
+
+    var newTask = function(request) {
+      console.log("retry requested");
+      request.respond(200, {"Content-Type":"application/json"}, JSON.stringify(newResponse));
+    }
+
+    server.respondWith("POST", /^\/_ah\/api\/swarming\/v1\/tasks\/new/, newTask);
+    server.respondWith("POST", /^\/api\/swarming\/v1\/tasks\/new/, newTask);
     </script>
 
     <link rel="import" href="task-page.html">