[Fetch API] Put body members directly on Response/Request

LayoutTests/http/tests/serviceworker/resources/fetch-access-control-worker.js

Index: LayoutTests/http/tests/serviceworker/resources/fetch-access-control-worker.js
diff --git a/LayoutTests/http/tests/serviceworker/resources/fetch-access-control-worker.js b/LayoutTests/http/tests/serviceworker/resources/fetch-access-control-worker.js
index 1cfb4c4274d203f86816ff966d233c687d5fc964..cf253f84988eccfa9dfd720c512e67ba6f41f674 100644
--- a/LayoutTests/http/tests/serviceworker/resources/fetch-access-control-worker.js
+++ b/LayoutTests/http/tests/serviceworker/resources/fetch-access-control-worker.js
@@ -75,15 +75,23 @@ self.addEventListener('fetch', function(event) {
           } else if (!params['noChange']) {
             request = new Request(request, init);
           }
+          var response;
           fetch(request)
             .then(function(res) {
-                // Send the result to fetch-access-control.html.
-                port.postMessage({fetchResult: 'resolved',
-                                  hasBody: !!res.body,
-                                  headers: headersToArray(res.headers),
-                                  type: res.type,
-                                  originalURL: originalURL});
-                resolve(res);
+                response = res;
+                res.text()

[yhirano, 2014/09/10 11:11:29]

How about flattening then by doing something like

fetch(...).then(function(res) {
    response = res;
    return res.text();
}).then(function(body) {
    ...
}).catch(function(e) {
    ...
})?

[horo, 2014/09/11 03:07:14]

If do so, {fetchResult: 'rejected'} will be sent when an error occurs while
calling res.text() or port.postMessage().
But it is not what I intended.
I added catch handler to send {fetchResult: 'error'}.

+                  .then(function(body) {
+                      // Send the result to fetch-access-control.html.
+                      port.postMessage(
+                        {
+                          fetchResult: 'resolved',
+                          body: body,
+                          headers: headersToArray(response.headers),
+                          type: response.type,
+                          originalURL: originalURL
+                        });
+                      resolve(response);
+                    });
               })
             .catch(function(e) {
                 // Send the result to fetch-access-control.html.