Make Blacklist::IsBlacklist asynchronous (it will need to be for safe

chrome/browser/extensions/extension_prefs.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_EXTENSION_PREFS_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_PREFS_H_
 
 #include <set>
 #include <string>
 #include <vector>
@@ skipping 157 matching lines @@
       bool did_escalate);
 
   // Getter and setters for disabled reason.
   int GetDisableReasons(const std::string& extension_id);
   void AddDisableReason(const std::string& extension_id,
                         Extension::DisableReason disable_reason);
   void RemoveDisableReason(const std::string& extension_id,
                            Extension::DisableReason disable_reason);
   void ClearDisableReasons(const std::string& extension_id);
 
+  // Gets the set of extensions that have been blacklisted in prefs.
+  std::set<std::string> GetBlacklistedExtensions();
+
+  // Sets whether the extension with |id| is blacklisted.
+  void SetExtensionBlacklisted(const std::string& extension_id,
+                               bool is_blacklisted);
+
   // Returns the version string for the currently installed extension, or
   // the empty string if not found.
   std::string GetVersionString(const std::string& extension_id);
 
   // Re-writes the extension manifest into the prefs.
   // Called to change the extension's manifest when it's re-localized.
   void UpdateManifest(const Extension* extension);
 
   // Returns extension path based on extension ID, or empty FilePath on error.
   FilePath GetExtensionPath(const std::string& extension_id);
 
   // Returns base extensions install directory.
   const FilePath& install_directory() const { return install_directory_; }
 
-  // Updates the prefs based on the blacklist.
-  void UpdateBlacklist(const std::set<std::string>& blacklist_set);
-
-  // Returns whether the extension with |id| is blacklisted.
-  // You probably don't want to call this method, see Blacklist::IsBlacklisted.
+  // Returns whether the extension with |id| has its blacklist bit set.
+  //
+  // WARNING: this only checks the extension's entry in prefs! There may be
+  // other reasons why an extension is blacklisted! You probably want to use
+  // Blacklist::IsBlacklisted rather than this method.
   bool IsExtensionBlacklisted(const std::string& id) const;
 
   // Based on extension id, checks prefs to see if it is orphaned.
   bool IsExtensionOrphaned(const std::string& id);
 
   // Increment the count of how many times we prompted the user to acknowledge
   // the given extension, and return the new count.
   int IncrementAcknowledgePromptCount(const std::string& extension_id);
 
   // Whether the user has acknowledged an external extension.
@@ skipping 281 matching lines @@
   // The underlying ExtensionSorting.
   ExtensionSorting* extension_sorting() const {
     return extension_sorting_.get();
   }
 
   // Describes the URLs that are able to install extensions. See
   // prefs::kExtensionAllowedInstallSites for more information.
   URLPatternSet GetAllowedInstallSites();
 
  private:
-  friend class ExtensionPrefsUninstallExtension;  // Unit test.
+  friend class ExtensionPrefsBlacklistedExtensions;  // Unit test.
+  friend class ExtensionPrefsUninstallExtension;     // Unit test.
 
   // See the Create methods.
   ExtensionPrefs(PrefService* prefs,
                  const FilePath& root_dir,
                  ExtensionPrefValueMap* extension_pref_value_map,
                  scoped_ptr<TimeProvider> time_provider);
 
   // If |extensions_disabled| is true, extension controlled preferences and
   // content settings do not become effective.
   void Init(bool extensions_disabled);
@@ skipping 105 matching lines @@
   scoped_refptr<ContentSettingsStore> content_settings_store_;
 
   scoped_ptr<TimeProvider> time_provider_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionPrefs);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_PREFS_H_