Add an experimental permissions API for extensions.

chrome/browser/extensions/extension_permissions_api.h

Index: chrome/browser/extensions/extension_permissions_api.h
diff --git a/chrome/browser/extensions/extension_permissions_api.h b/chrome/browser/extensions/extension_permissions_api.h
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+++ b/chrome/browser/extensions/extension_permissions_api.h
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+// 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_EXTENSION_PERMISSIONS_API_H__
+#define CHROME_BROWSER_EXTENSIONS_EXTENSION_PERMISSIONS_API_H__
+#pragma once
+
+#include "chrome/browser/extensions/extension_function.h"
+#include "chrome/browser/extensions/extension_install_ui.h"
+#include "chrome/common/extensions/extension_permission_set.h"
+#include "chrome/common/chrome_notification_types.h"
+#include "content/browser/renderer_host/render_process_host.h"
+#include "content/common/notification_service.h"
+
+namespace base {
+class DictionaryValue;
+}
+class Extension;
+class ExtensionPermissionSet;
+class ExtensionService;
+class Profile;
+
+class ExtensionPermissionsManager {
+ public:
+  explicit ExtensionPermissionsManager(ExtensionService* extension_service);
+  ~ExtensionPermissionsManager();
+
+  // Adds the set of |permissions| to the |extension|'s active permission set
+  // and sends the relevant messages and notifications. This method assumes the
+  // user has already been prompted, if necessary, for the extra permissions.
+  void AddPermissions(const Extension* extension,
+                      const ExtensionPermissionSet* permissions);
+
+  // Removes the set of |permissions| from the |extension|'s active permission
+  // set and sends the relevant messages and notifications.
+  void RemovePermissions(const Extension* extension,
+                         const ExtensionPermissionSet* permissions);
+
+  // Returns the list of API permissions that are supported by the optional
+  // permissions API.
+  const ExtensionPermissionSet& whitelist() const { return *whitelist_; }
+
+ private:
+  enum EventType {
+    ADDED,
+    REMOVED,
+  };
+
+  // Dispatches specified event to the extension.
+  void DispatchEvent(const std::string& extension_id,
+                     const char* event_name,
+                     const ExtensionPermissionSet* changed_permissions);
+
+  // Issues the relevant events, messages and notifications when the permissions
+  // have changed for the |extension| (|changed| is the permission delta, while
+  // |active| is the new permission set). Specifically, this sends the
+  // EXTENSION_PERMISSIONS_UPDATED notification, the
+  // ExtensionMsg_UpdatePermissions IPC message, and fires the onAdded/onRemoved
+  // events in the extension.
+  void NotifyPermissionsUpdated(const Extension* extension,
+                                const ExtensionPermissionSet* active,
+                                const ExtensionPermissionSet* changed,
+                                EventType event_type);
+
+  // Registers the list of APIs supported by the optional permissions API.
+  void RegisterWhitelist();
+
+  ExtensionService* extension_service_;
+  scoped_refptr<ExtensionPermissionSet> whitelist_;
+};
+
+
+// chrome.permissions.contains
+class ContainsPermissionsFunction : public SyncExtensionFunction {
+  virtual ~ContainsPermissionsFunction() {}
+  virtual bool RunImpl() OVERRIDE;
+  DECLARE_EXTENSION_FUNCTION_NAME("experimental.permissions.contains")
+};
+
+// chrome.permissions.getAll
+class GetAllPermissionsFunction : public SyncExtensionFunction {
+  virtual ~GetAllPermissionsFunction() {}
+  virtual bool RunImpl() OVERRIDE;
+  DECLARE_EXTENSION_FUNCTION_NAME("experimental.permissions.getAll")
+};
+
+// chrome.permissions.remove
+class RemovePermissionsFunction : public SyncExtensionFunction {
+  virtual ~RemovePermissionsFunction() {}
+  virtual bool RunImpl() OVERRIDE;
+  DECLARE_EXTENSION_FUNCTION_NAME("experimental.permissions.remove")
+};
+
+// chrome.permissions.request
+class RequestPermissionsFunction : public AsyncExtensionFunction,
+                                   public ExtensionInstallUI::Delegate {
+ public:
+  // FOR TESTS ONLY to bypass the confirmation UI.
+  static void SetAutoConfirmForTests(bool should_proceed);
+
+  RequestPermissionsFunction();
+
+  // Implementing ExtensionInstallUI::Delegate interface.
+  virtual void InstallUIProceed() OVERRIDE;
+  virtual void InstallUIAbort(bool user_initiated) OVERRIDE;
+
+ protected:
+  virtual ~RequestPermissionsFunction();
+  virtual bool RunImpl() OVERRIDE;
+
+ private:
+  scoped_ptr<ExtensionInstallUI> install_ui_;
+  scoped_refptr<ExtensionPermissionSet> requested_permissions_;
+  const Extension* extension_;
+  DECLARE_EXTENSION_FUNCTION_NAME("experimental.permissions.request")
+};
+
+#endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_PERMISSIONS_API_H__