Add a blob field to ServiceWorkerFetchResponse and read the blob

content/browser/fileapi/mock_url_request_delegate.h

Index: content/browser/fileapi/mock_url_request_delegate.h
diff --git a/content/browser/fileapi/mock_url_request_delegate.h b/content/browser/fileapi/mock_url_request_delegate.h
new file mode 100644
index 0000000000000000000000000000000000000000..137b11426e844ad682720824d5c9b48c2e8ea60b
--- /dev/null
+++ b/content/browser/fileapi/mock_url_request_delegate.h
@@ -0,0 +1,38 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CONTENT_BROWSER_FILEAPI_MOCK_URL_REQUEST_DELEGATE_H
+#define CONTENT_BROWSER_FILEAPI_MOCK_URL_REQUEST_DELEGATE_H
+
+#include "net/url_request/url_request.h"
+
+namespace net {
+class IOBuffer;
+}
+
+namespace content {
+
+// A URL request delegate that receives the response body.
+class MockURLRequestDelegate : public net::URLRequest::Delegate {
+ public:
+  MockURLRequestDelegate();
+  virtual ~MockURLRequestDelegate();
+
+  virtual void OnResponseStarted(net::URLRequest* request) OVERRIDE;
+  virtual void OnReadCompleted(net::URLRequest* request,
+                               int bytes_read) OVERRIDE;
+  const std::string& response_data() const { return response_data_; }
+
+ private:
+  void ReadSome(net::URLRequest* request);
+  void ReceiveData(net::URLRequest* request, int bytes_read);
+  void RequestComplete();
+
+  scoped_refptr<net::IOBuffer> io_buffer_;
+  std::string response_data_;
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_FILEAPI_MOCK_URL_REQUEST_DELEGATE_H