Add ManagedModePolicyProvider and extension API to get and set policies.

chrome/browser/extensions/extension_managed_mode_api.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.
 
 // Implementation of the Chrome Extensions Managed Mode API.
 
 #include "chrome/browser/extensions/extension_managed_mode_api.h"
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/json/json_writer.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/extensions/extension_event_router.h"
 #include "chrome/browser/extensions/extension_preference_api_constants.h"
 #include "chrome/browser/managed_mode.h"
+#include "chrome/browser/policy/managed_mode_policy_provider.h"
+#include "chrome/browser/policy/managed_mode_policy_provider_factory.h"

[Joao da Silva, 2012/06/06 16:36:38]

#ifdef ENABLE_CONFIGURATION_POLICY

[Bernhard Bauer, 2012/06/08 10:06:44]

Done.

 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/common/chrome_notification_types.h"
 #include "chrome/common/pref_names.h"
 #include "content/public/browser/notification_details.h"
 
 namespace {
 
 // Event that is fired when we enter or leave managed mode.
 const char kChangeEventName[] = "managedModePrivate.onChange";
@@ skipping 57 matching lines @@
       base::Bind(&EnterManagedModeFunction::SendResult, this));
   return true;
 }
 
 void EnterManagedModeFunction::SendResult(bool success) {
   scoped_ptr<DictionaryValue> result(new DictionaryValue);
   result->SetBoolean(kEnterSuccessKey, success);
   result_.reset(result.release());
   SendResponse(true);
 }
+
+GetPolicyFunction::~GetPolicyFunction() { }
+
+bool GetPolicyFunction::RunImpl() {
+  std::string key;
+  EXTENSION_FUNCTION_VALIDATE(args_->GetString(0, &key));
+  policy::ManagedModePolicyProvider* policy_provider =
+      ManagedModePolicyProviderFactory::GetForProfile(profile_);

[Joao da Silva, 2012/06/06 16:36:38]

#ifdef ENABLE_CONFIGURATION_POLICY

[Bernhard Bauer, 2012/06/08 10:06:44]

Done.

+  const base::Value* policy = policy_provider->GetPolicy(key);

[Joao da Silva, 2012/06/06 16:36:38]

This only reads policies from the ManagedModePolicyProvider, and won't read
policies from other providers. This is ok if that's what you want, otherwise
this should read from the PolicyService.

SetPolicyFunction can also set a policy that will be overridden by a platform
provider, such that a Get after a Set won't return the same value.

[Bernhard Bauer, 2012/06/08 10:06:44]

I think so. I don't want the extension to have to deal with stuff like policy
provider precedences. In general, the situation where a machine is both
admin-managed and parent-managed is not a use case I'm going to optimize for.

+  if (policy)
+    result_.reset(policy->DeepCopy());
+  return true;
+}
+
+SetPolicyFunction::~SetPolicyFunction() { }
+
+bool SetPolicyFunction::RunImpl() {
+  std::string key;
+  EXTENSION_FUNCTION_VALIDATE(args_->GetString(0, &key));
+  base::Value* value = NULL;
+  EXTENSION_FUNCTION_VALIDATE(args_->Get(1, &value));
+  policy::ManagedModePolicyProvider* policy_provider =

[Joao da Silva, 2012/06/06 16:36:38]

#ifdef ENABLE_CONFIGURATION_POLICY

[Bernhard Bauer, 2012/06/08 10:06:44]

Done.

+      ManagedModePolicyProviderFactory::GetForProfile(profile_);
+  policy_provider->SetPolicy(key, value);
+  return true;
+}