Adds basic group policy support. Resubmitting r33093 with a new unit test....

chrome/browser/group_policy_settings.h

+// Copyright (c) 2009 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_GROUP_POLICY_SETTINGS_H_
+#define CHROME_BROWSER_GROUP_POLICY_SETTINGS_H_
+
+#include "chrome/browser/group_policy.h"
+
+#define DECLARE_POLICY(name, type) extern const type gp##name
+#define DECLARE_POLICY_DWORD(name) DECLARE_POLICY(name, DWORDSetting)
+#define DECLARE_POLICY_BOOL(name) DECLARE_POLICY(name, BoolSetting)
+#define DECLARE_POLICY_STRING(name) DECLARE_POLICY(name, StringSetting)
+#define DECLARE_POLICY_STRINGLIST(name) DECLARE_POLICY(name, StringListSetting)
+
+#define DEFINE_POLICY(name, type, key, value, storage, combine) \
+    const type gp##name(key, value, storage, combine)
+#define DEFINE_POLICY_DWORD(name, key, value) \
+    DEFINE_POLICY(name, DWORDSetting, key, \
+    value, POLICYSTORAGE_SINGLEVALUE, POLICYCOMBINE_PREFERMACHINE)
+#define DEFINE_POLICY_BOOL(name, key, value) \
+    DEFINE_POLICY(name, BoolSetting, key, value, \
+    POLICYSTORAGE_SINGLEVALUE, POLICYCOMBINE_LOGICALOR)
+#define DEFINE_POLICY_STRING(name, key, value) \
+    DEFINE_POLICY(name, StringSetting, key, value, \
+    POLICYSTORAGE_SINGLEVALUE, POLICYCOMBINE_PREFERMACHINE)
+#define DEFINE_POLICY_STRINGLIST(name, key) \
+    DEFINE_POLICY(name, StringListSetting, key, L"", \
+    POLICYSTORAGE_CONCATSUBKEYS, POLICYCOMBINE_CONCATENATE)
+
+namespace group_policy {
+
+typedef Setting<DWORD> DWORDSetting;
+typedef Setting<bool>  BoolSetting;
+typedef Setting<std::wstring> StringSetting;
+typedef Setting<ListValue> StringListSetting;
+
+// Extern declarations of all policy settings.  Policies should always
+// be accessed via the GroupPolicySetting object rather than directly
+// through the registry, to ensure the priorities and combination flags
+// are respected.
+// TODO(gwilson): The actual group policy settings need to be finalized.
+// Change this testing set to the true supported set.
+DECLARE_POLICY_STRING(Homepage);
+DECLARE_POLICY_BOOL(HomepageIsNewTabPage);
+DECLARE_POLICY_STRINGLIST(ChromeFrameDomainWhiteList);
+
+}  // namespace
+
+#endif  // CHROME_BROWSER_GROUP_POLICY_SETTINGS_H_
+