Refactor the various ways to control what users can do to extensions.

chrome/browser/extensions/test_management_policy.cc

+// 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.
+
+#include "chrome/browser/extensions/test_management_policy.h"
+
+#include "base/utf_string_conversions.h"
+
+namespace extensions {
+TestManagementPolicyProvider::TestManagementPolicyProvider()
+    : may_load_(true),
+      may_modify_status_(true),
+      must_remain_enabled_(false) {
+  error_message_ = UTF8ToUTF16(expected_error());
+}
+
+TestManagementPolicyProvider::TestManagementPolicyProvider(
+    int prohibited_actions) {
+  SetProhibitedActions(prohibited_actions);
+  error_message_ = UTF8ToUTF16(expected_error());
+}
+
+void TestManagementPolicyProvider::SetProhibitedActions(
+    int prohibited_actions) {
+  may_load_ = (prohibited_actions & PROHIBIT_LOAD) == 0;
+  may_modify_status_ = (prohibited_actions & PROHIBIT_MODIFY_STATUS) == 0;
+  must_remain_enabled_ = (prohibited_actions & MUST_REMAIN_ENABLED) != 0;
+}
+
+std::string TestManagementPolicyProvider::GetPolicyProviderName() const {
+  return "the test management policy provider";
+}
+
+bool TestManagementPolicyProvider::UserMayLoad(const Extension* extension,
+                                               string16* error) const {
+  if (error && !may_load_)
+    *error = error_message_;
+  return may_load_;
+}
+
+bool TestManagementPolicyProvider::UserMayModifySettings(
+    const Extension* extension, string16* error) const {
+  if (error && !may_modify_status_)
+    *error = error_message_;
+  return may_modify_status_;
+}
+
+bool TestManagementPolicyProvider::MustRemainEnabled(const Extension* extension,
+                                                     string16* error) const {
+  if (error && must_remain_enabled_)
+    *error = error_message_;
+  return must_remain_enabled_;
+}
+}  // namespace