Add a blob field to ServiceWorkerFetchResponse and read the blob

content/browser/service_worker/service_worker_url_request_job.h

 // 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_SERVICE_WORKER_SERVICE_WORKER_URL_REQUEST_JOB_H_
 #define CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_URL_REQUEST_JOB_H_
 
 #include "base/memory/weak_ptr.h"
 #include "content/common/content_export.h"
 #include "content/common/service_worker/service_worker_status_code.h"
 #include "content/common/service_worker/service_worker_types.h"
 #include "net/http/http_byte_range.h"
+#include "net/url_request/url_request.h"
 #include "net/url_request/url_request_job.h"
 
+namespace webkit_blob {
+class BlobStorageContext;
+}
+
 namespace content {
 
 class ServiceWorkerContextCore;
 class ServiceWorkerFetchDispatcher;
 class ServiceWorkerProviderHost;
 
 class CONTENT_EXPORT ServiceWorkerURLRequestJob
-    : public net::URLRequestJob {
+    : public net::URLRequestJob,
+      public net::URLRequest::Delegate {
  public:
   ServiceWorkerURLRequestJob(
       net::URLRequest* request,
       net::NetworkDelegate* network_delegate,
-      base::WeakPtr<ServiceWorkerProviderHost> provider_host);
+      base::WeakPtr<ServiceWorkerProviderHost> provider_host,
+      base::WeakPtr<webkit_blob::BlobStorageContext> blob_storage_context);
 
   // Sets the response type.
   void FallbackToNetwork();
   void ForwardToServiceWorker();
 
   bool ShouldFallbackToNetwork() const {
     return response_type_ == FALLBACK_TO_NETWORK;
   }
   bool ShouldForwardToServiceWorker() const {
     return response_type_ == FORWARD_TO_SERVICE_WORKER;
   }
 
   // net::URLRequestJob overrides:
   virtual void Start() OVERRIDE;
   virtual void Kill() OVERRIDE;
   virtual net::LoadState GetLoadState() const OVERRIDE;
   virtual bool GetCharset(std::string* charset) OVERRIDE;
   virtual bool GetMimeType(std::string* mime_type) const OVERRIDE;
   virtual void GetResponseInfo(net::HttpResponseInfo* info) OVERRIDE;
   virtual int GetResponseCode() const OVERRIDE;
   virtual void SetExtraRequestHeaders(
       const net::HttpRequestHeaders& headers) OVERRIDE;
   virtual bool ReadRawData(net::IOBuffer* buf,
                            int buf_size,
                            int *bytes_read) OVERRIDE;
 
+  // net::URLRequest::Delegate overrides that read the blob from the
+  // ServiceWorkerFetchResponse.
+  virtual void OnReceivedRedirect(net::URLRequest* request,
+                                  const GURL& new_url,
+                                  bool* defer_redirect) OVERRIDE;
+  virtual void OnAuthRequired(net::URLRequest* request,
+                              net::AuthChallengeInfo* auth_info) OVERRIDE;
+  virtual void OnCertificateRequested(
+      net::URLRequest* request,
+      net::SSLCertRequestInfo* cert_request_info) OVERRIDE;
+  virtual void OnSSLCertificateError(net::URLRequest* request,
+                                     const net::SSLInfo& ssl_info,
+                                     bool fatal) OVERRIDE;
+  virtual void OnBeforeNetworkStart(net::URLRequest* request,
+                                    bool* defer) OVERRIDE;
+  virtual void OnResponseStarted(net::URLRequest* request) OVERRIDE;
+  virtual void OnReadCompleted(net::URLRequest* request,
+                               int bytes_read) OVERRIDE;
+
   const net::HttpResponseInfo* http_info() const;
 
  protected:
   virtual ~ServiceWorkerURLRequestJob();
 
  private:
   enum ResponseType {
     NOT_DETERMINED,
     FALLBACK_TO_NETWORK,
     FORWARD_TO_SERVICE_WORKER,
   };
 
   // We start processing the request if Start() is called AND response_type_
   // is determined.
   void MaybeStartRequest();
   void StartRequest();
 
   // For FORWARD_TO_SERVICE_WORKER case.
   void DidDispatchFetchEvent(ServiceWorkerStatusCode status,
                              ServiceWorkerFetchEventResult fetch_result,
                              const ServiceWorkerResponse& response);
 
+  // Populates |http_response_headers_| with info from |response|.
   void CreateResponseHeader(const ServiceWorkerResponse& response);
+  // Creates |http_response_info_| using |http_response_headers_| and calls
+  // NotifyHeadersComplete.
+  void CommitResponseHeader();
 
   base::WeakPtr<ServiceWorkerProviderHost> provider_host_;
 
   ResponseType response_type_;
   bool is_started_;
 
   net::HttpByteRange byte_range_;
   scoped_ptr<net::HttpResponseInfo> range_response_info_;
   scoped_ptr<net::HttpResponseInfo> http_response_info_;
+  // Headers that have not yet been committed to |http_response_info_|.
+  scoped_refptr<net::HttpResponseHeaders> http_response_headers_;
 
   // Used when response type is FORWARD_TO_SERVICE_WORKER.
   scoped_ptr<ServiceWorkerFetchDispatcher> fetch_dispatcher_;
+  base::WeakPtr<webkit_blob::BlobStorageContext> blob_storage_context_;
+  scoped_ptr<net::URLRequest> blob_request_;
 
   base::WeakPtrFactory<ServiceWorkerURLRequestJob> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ServiceWorkerURLRequestJob);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_URL_REQUEST_JOB_H_