Declarative content scripts: Browser-side: per-extension shared memory regions (lazily loaded)

extensions/browser/extension_system.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_BROWSER_EXTENSION_SYSTEM_H_
 #define EXTENSIONS_BROWSER_EXTENSION_SYSTEM_H_
 
 #include <string>
 
 #include "base/memory/ref_counted.h"
 #include "components/keyed_service/core/keyed_service.h"
 #include "extensions/common/extension.h"
 
 class ExtensionService;
 
 #if defined(OS_CHROMEOS)
 namespace chromeos {
 class DeviceLocalAccountManagementPolicyProvider;
 }
 #endif  // defined(OS_CHROMEOS)
 
 namespace content {
 class BrowserContext;
 }
 
 namespace extensions {
 
 class Blacklist;
 class ContentVerifier;
+class DeclarativeUserScriptMaster;
 class ErrorConsole;
 class EventRouter;
 class Extension;
 class ExtensionSet;
 class ExtensionWarningService;
 class InfoMap;
 class InstallVerifier;
 class LazyBackgroundTaskQueue;
 class ManagementPolicy;
 class OneShotEvent;
 class ProcessManager;
 class QuotaService;
 class RuntimeData;
+class SharedUserScriptMaster;
 class StateStore;
-class UserScriptMaster;
 
 // ExtensionSystem manages the lifetime of many of the services used by the
 // extensions and apps system, and it handles startup and shutdown as needed.
 // Eventually, we'd like to make more of these services into KeyedServices in
 // their own right.
 class ExtensionSystem : public KeyedService {
  public:
   ExtensionSystem();
   virtual ~ExtensionSystem();
 
@@ skipping 10 matching lines @@
 
   // Per-extension data that can change during the life of the process but
   // does not persist across restarts. Lives on UI thread. Created at startup.
   virtual RuntimeData* runtime_data() = 0;
 
   // The class controlling whether users are permitted to perform certain
   // actions on extensions (install, uninstall, disable, etc.).
   // The ManagementPolicy is created at startup.
   virtual ManagementPolicy* management_policy() = 0;
 
-  // The UserScriptMaster is created at startup.
-  virtual UserScriptMaster* user_script_master() = 0;
+  // The SharedUserScriptMaster is created at startup.
+  virtual SharedUserScriptMaster* shared_user_script_master() = 0;
 
   // The ProcessManager is created at startup.
   virtual ProcessManager* process_manager() = 0;
 
   // The StateStore is created at startup.
   virtual StateStore* state_store() = 0;
 
   // The rules store is created at startup.
   virtual StateStore* rules_store() = 0;
 
@@ skipping 41 matching lines @@
   virtual const OneShotEvent& ready() const = 0;
 
   // Returns the content verifier, if any.
   virtual ContentVerifier* content_verifier() = 0;
 
   // Get a set of extensions that depend on the given extension.
   // TODO(elijahtaylor): Move SharedModuleService out of chrome/browser
   // so it can be retrieved from ExtensionSystem directly.
   virtual scoped_ptr<ExtensionSet> GetDependentExtensions(
       const Extension* extension) = 0;
+
+  // Get the user script master for declarative scripts, if any.
+  virtual DeclarativeUserScriptMaster*
+      GetDeclarativeUserScriptMasterByExtension(
+          const ExtensionId& extension_id) = 0;
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_BROWSER_EXTENSION_SYSTEM_H_