storage: Cleanup class/struct forward declarations

storage/browser/blob/blob_storage_context.h

 // Copyright (c) 2013 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 STORAGE_BROWSER_BLOB_BLOB_STORAGE_CONTEXT_H_
 #define STORAGE_BROWSER_BLOB_BLOB_STORAGE_CONTEXT_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <map>
 #include <memory>
 #include <string>
 #include <vector>
 
 #include "base/callback_forward.h"
 #include "base/gtest_prod_util.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
 #include "storage/browser/blob/blob_data_handle.h"
 #include "storage/browser/blob/blob_entry.h"
 #include "storage/browser/blob/blob_memory_controller.h"
 #include "storage/browser/blob/blob_storage_registry.h"
 #include "storage/browser/storage_browser_export.h"
 #include "storage/common/blob_storage/blob_storage_constants.h"
 
 class GURL;
 
-namespace base {
-class FilePath;
-class Time;
-class TaskRunner;
-}
-
 namespace content {
 class BlobDispatcherHost;
 class BlobDispatcherHostTest;
 class BlobStorageBrowserTest;
 }
 
 namespace storage {
 class BlobDataBuilder;
 class BlobDataHandle;
-class BlobDataItem;
 class BlobDataSnapshot;
 class ShareableBlobDataItem;
 
 // This class handles the logistics of blob storage within the browser process.
 // This class is not threadsafe, access on IO thread. In Chromium there is one
 // instance per profile.
 class STORAGE_EXPORT BlobStorageContext {
  public:
   using TransportAllowedCallback = BlobEntry::TransportAllowedCallback;
 
@@ skipping 209 matching lines @@
   BlobStorageRegistry registry_;
   BlobMemoryController memory_controller_;
   base::WeakPtrFactory<BlobStorageContext> ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(BlobStorageContext);
 };
 
 }  // namespace storage
 
 #endif  // STORAGE_BROWSER_BLOB_BLOB_STORAGE_CONTEXT_H_