Offload disk accesses to WorkerPool in ExtensionProtocolHandler

webkit/blob/view_blob_internals_job.h

 // Copyright (c) 2011 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 WEBKIT_BLOB_VIEW_BLOB_INTERNALS_JOB_H_
 #define WEBKIT_BLOB_VIEW_BLOB_INTERNALS_JOB_H_
 
 #include <string>
 
 #include "base/memory/weak_ptr.h"
@@ skipping 10 matching lines @@
 class BlobStorageController;
 
 // A job subclass that implements a protocol to inspect the internal
 // state of blob registry.
 class BLOB_EXPORT ViewBlobInternalsJob : public net::URLRequestSimpleJob {
  public:
   ViewBlobInternalsJob(net::URLRequest* request,
                        BlobStorageController* blob_storage_controller);
 
   virtual void Start() OVERRIDE;
-  virtual bool GetData(std::string* mime_type,
-                       std::string* charset,
-                       std::string* data) const OVERRIDE;
+  virtual int GetData(std::string* mime_type,
+                      std::string* charset,
+                      std::string* data,
+                      const net::CompletionCallback& callback) const OVERRIDE;
   virtual bool IsRedirectResponse(GURL* location,
                                   int* http_status_code) OVERRIDE;
   virtual void Kill() OVERRIDE;
 
  private:
   virtual ~ViewBlobInternalsJob();
 
   void DoWorkAsync();
   void GenerateHTML(std::string* out) const;
   static void GenerateHTMLForBlobData(const BlobData& blob_data,
                                       std::string* out);
 
   BlobStorageController* blob_storage_controller_;
   base::WeakPtrFactory<ViewBlobInternalsJob> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ViewBlobInternalsJob);
 };
 
 }  // namespace webkit_blob
 
 #endif  // WEBKIT_BLOB_VIEW_BLOB_INTERNALS_JOB_H_