Revert of Change how the quota system computes the total poolsize for temporary storage

extensions/shell/browser/shell_special_storage_policy.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 EXTENSIONS_SHELL_BROWSER_SHELL_SPECIAL_STORAGE_POLICY_H_
 #define EXTENSIONS_SHELL_BROWSER_SHELL_SPECIAL_STORAGE_POLICY_H_
 
 #include "storage/browser/quota/special_storage_policy.h"
 
 namespace extensions {
 
 // A simple storage policy for app_shell which does not limit storage
 // capabilities and aims to be as permissive as possible.
 class ShellSpecialStoragePolicy : public storage::SpecialStoragePolicy {
  public:
   ShellSpecialStoragePolicy();
 
   // storage::SpecialStoragePolicy implementation.
   bool IsStorageProtected(const GURL& origin) override;
   bool IsStorageUnlimited(const GURL& origin) override;
   bool IsStorageDurable(const GURL& origin) override;
   bool IsStorageSessionOnly(const GURL& origin) override;
+  bool CanQueryDiskSize(const GURL& origin) override;
   bool HasIsolatedStorage(const GURL& origin) override;
   bool HasSessionOnlyOrigins() override;
 
  protected:
   ~ShellSpecialStoragePolicy() override;
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_SHELL_BROWSER_SHELL_SPECIAL_STORAGE_POLICY_H