Use non-proxied links

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

 <!--
   Copyright 2016 The LUCI Authors. All rights reserved.
   Use of this source code is governed under the Apache License, Version 2.0
   that can be found in the LICENSE file.
 
   This in an HTML Import-able file that contains the definition
   of the following elements:
 
     <task-page-data>
 
@@ skipping 111 matching lines @@
 
       reload: function(){
         if (!this.task_id || !this.auth_headers) {
           console.log("task_id and auth_headers can't be empty");
           return;
         }
         if (lastRequest) {
           this.cancelAsync(lastRequest);
         }
 
-        var baseUrl = "/_ah/api/swarming/v1/task/" + this.task_id;
+        var baseUrl = "/api/swarming/v1/task/" + this.task_id;
         lastRequest = this.async(function(){
           lastRequest = undefined;
           this._getJsonAsync("_request", baseUrl + "/request",
             "_busy1", this.auth_headers);
           this._getJsonAsync("_result",
             baseUrl + "/result?include_performance_stats=true",
             "_busy2", this.auth_headers);
           this.reloadStdout();
         }, TASK_ID_DEBOUNCE_MS);
       },
@@ skipping 43 matching lines @@
       },
 
       _parseStdout: function(stdout) {
         if (!stdout || !stdout.output) {
           return "[No output yet]";
         }
         return stdout.output;
       },
 
       reloadStdout: function() {
-        this._getJsonAsync("_stdout", "/_ah/api/swarming/v1/task/" +
+        this._getJsonAsync("_stdout", "/api/swarming/v1/task/" +
               this.task_id + "/stdout", "_busy3", this.auth_headers);
       },
 
     });
   })();
   </script>
 </dom-module>