Extension Settings API: throttle the API in the same way that the Bookmarks API

chrome/browser/extensions/settings/settings_api.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 CHROME_BROWSER_EXTENSIONS_SETTINGS_SETTINGS_API_H_
 #define CHROME_BROWSER_EXTENSIONS_SETTINGS_SETTINGS_API_H_
 #pragma once
 
 #include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
@@ skipping 48 matching lines @@
 };
 
 class SetSettingsFunction : public SettingsFunction {
  public:
   DECLARE_EXTENSION_FUNCTION_NAME("experimental.settings.set");
 
  protected:
   virtual bool RunWithStorage(
       scoped_refptr<SettingsObserverList> observers,
       SettingsStorage* storage) OVERRIDE;
+
+  virtual void GetQuotaLimitHeuristics(
+      QuotaLimitHeuristics* heuristics) const OVERRIDE;
 };
 
 class RemoveSettingsFunction : public SettingsFunction {
  public:
   DECLARE_EXTENSION_FUNCTION_NAME("experimental.settings.remove");
 
  protected:
   virtual bool RunWithStorage(
       scoped_refptr<SettingsObserverList> observers,
       SettingsStorage* storage) OVERRIDE;
+
+  virtual void GetQuotaLimitHeuristics(
+      QuotaLimitHeuristics* heuristics) const OVERRIDE;
 };
 
 class ClearSettingsFunction : public SettingsFunction {
  public:
   DECLARE_EXTENSION_FUNCTION_NAME("experimental.settings.clear");
 
  protected:
   virtual bool RunWithStorage(
       scoped_refptr<SettingsObserverList> observers,
       SettingsStorage* storage) OVERRIDE;
+
+  virtual void GetQuotaLimitHeuristics(
+      QuotaLimitHeuristics* heuristics) const OVERRIDE;
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_SETTINGS_SETTINGS_API_H_