Update Cache.put() test to accept string as request

LayoutTests/http/tests/serviceworker/resources/cache-put-worker.js

 importScripts('worker-testharness.js');
 importScripts('/resources/testharness-helpers.js');
 
 var test_url = 'https://example.com/foo';
 
 // Construct a generic Request object. The URL is |test_url|. All other fields
 // are defaults.
 function new_test_request() {
   return new Request(test_url);
 }
@@ skipping 136 matching lines @@
           return cache.match(test_url);
         })
       .then(function(result) {
           assert_object_equals(result, alternate_response,
                                'Cache.put should replace existing ' +
                                'response with new response.');
         });
   }, 'Cache.put called twice with same Request and different Responses');
 
 cache_test(function(cache) {
-    return assert_promise_rejects(
-      cache.put('http://example.com/foo', new_test_response()),
-      new TypeError(),
-      'Cache.put should only accept a Request object as the request.');
-  }, 'Cache.put with an invalid request');
+    var url = 'http://example.com/foo';
+    return cache.put(url, new_test_response('some body'))
+      .then(function() { return cache.match(url); })
+      .then(function(response) { return response.text(); })
+      .then(function(body) {
+          assert_equals(body, 'some body',
+                        'Cache.put should accept a string as request');

[asanka, 2014/10/24 04:59:07]

Minor nit: I've been including the ending period in assertion descriptions.

+      });
+  }, 'Cache.put with an string request');
 
 cache_test(function(cache) {
     return assert_promise_rejects(
       cache.put(new_test_request(), 'Hello world!'),
       new TypeError(),
       'Cache.put should only accept a Response object as the response.');
   }, 'Cache.put with an invalid response');
 
 cache_test(function(cache) {
   return assert_promise_rejects(
@@ skipping 30 matching lines @@
       new TypeError(),
       'Cache.put should throw a TypeError for non-GET requests.');
   }, 'Cache.put with a non-GET request');
 
 cache_test(function(cache) {
     return assert_promise_rejects(
       cache.put(new_test_request(), null),
       new TypeError(),
       'Cache.put should throw a TypeError for an empty response.');
   }, 'Cache.put with an empty response');