Enforce the 'requirements' field in manifests.

chrome/browser/extensions/extension_service.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_SERVICE_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_SERVICE_H_
 
 #include <list>
 #include <map>
 #include <set>
@@ skipping 68 matching lines @@
 
 namespace extensions {
 class AppSyncData;
 class ComponentLoader;
 class ContentSettingsStore;
 class Extension;
 class ExtensionCookiesEventRouter;
 class ExtensionSyncData;
 class ExtensionSystem;
 class ExtensionUpdater;
+class RequirementsProvider;
 class SettingsFrontend;
 class WebNavigationEventRouter;
 }
 
 // This is an interface class to encapsulate the dependencies that
 // various classes have on ExtensionService. This allows easy mocking.
 class ExtensionServiceInterface : public syncer::SyncableService {
  public:
   // A function that returns true if the given extension should be
   // included and false if it should be filtered out.  Identical to
@@ skipping 244 matching lines @@
 
   // Enables the extension.  If the extension is already enabled, does
   // nothing.
   virtual void EnableExtension(const std::string& extension_id);
 
   // Disables the extension.  If the extension is already disabled, or
   // cannot be disabled, does nothing.
   virtual void DisableExtension(const std::string& extension_id,
       extensions::Extension::DisableReason disable_reason);
 
+  // Called to report an extension that declares requirements that are not meet

[Aaron Boodman, 2012/07/22 17:46:25]

s/meet/met/

+  // by the system. An install warning will be added to the extension, and if
+  // |disable_extension| is true, the extension will be disabled.
+  void UnsupportedRequirements(const std::string& extension_id,
+                               const string16& error,
+                               bool disable_extension);
+
   // Updates the |extension|'s granted permissions lists to include all
   // permissions in the |extension|'s manifest and re-enables the
   // extension.
   void GrantPermissionsAndEnableExtension(
       const extensions::Extension* extension,
       bool record_oauth2_grant);
 
   // Check for updates (or potentially new extensions from external providers)
   void CheckForExternalUpdates();
 
@@ skipping 484 matching lines @@
   ExtensionWarningSet extension_warnings_;
 
   scoped_ptr<extensions::APIResourceController> api_resource_controller_;
 
   extensions::ProcessMap process_map_;
 
   AppShortcutManager app_shortcut_manager_;
 
   scoped_ptr<ExtensionErrorUI> extension_error_ui_;
 
+  // The provider that checks if an extension is supported.
+  scoped_ptr<extensions::RequirementsProvider> requirements_provider_;
+
   FRIEND_TEST_ALL_PREFIXES(ExtensionServiceTest,
                            InstallAppsWithUnlimtedStorage);
   FRIEND_TEST_ALL_PREFIXES(ExtensionServiceTest,
                            InstallAppsAndCheckStorageProtection);
   DISALLOW_COPY_AND_ASSIGN(ExtensionService);
 };
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_SERVICE_H_