Clear in-memory caches of renderers when rules change

chrome/browser/extensions/api/declarative_webrequest/webrequest_rules_registry.h

 // Copyright (c) 2012 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_API_DECLARATIVE_WEBREQUEST_WEBREQUEST_RULES_REGISTRY_H_
 #define CHROME_BROWSER_EXTENSIONS_API_DECLARATIVE_WEBREQUEST_WEBREQUEST_RULES_REGISTRY_H_
 
 #include <list>
 #include <map>
 #include <set>
@@ skipping 76 matching lines @@
       const std::vector<std::string>& rule_identifiers) OVERRIDE;
   virtual std::string RemoveAllRulesImpl(
       const std::string& extension_id) OVERRIDE;
   virtual content::BrowserThread::ID GetOwnerThread() const OVERRIDE;
 
   // Returns true if this object retains no allocated data. Only for debugging.
   bool IsEmpty() const;
 
  protected:
   virtual ~WebRequestRulesRegistry();
+
+  // Virtual for testing:
   virtual base::Time GetExtensionInstallationTime(
       const std::string& extension_id) const;
+  virtual void ClearCacheOnNavigation();
 
  private:
   typedef std::map<URLMatcherConditionSet::ID, WebRequestRule*> RuleTriggers;
   typedef std::map<WebRequestRule::GlobalRuleId, linked_ptr<WebRequestRule> >
       RulesMap;
 
   // Map that tells us which WebRequestRule may match under the condition that
   // the URLMatcherConditionSet::ID was returned by the |url_matcher_|.
   RuleTriggers rule_triggers_;
 
   RulesMap webrequest_rules_;
 
   URLMatcher url_matcher_;
 
   scoped_refptr<ExtensionInfoMap> extension_info_map_;
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_DECLARATIVE_WEBREQUEST_WEBREQUEST_RULES_REGISTRY_H_