Add ManagedModePolicyProvider and extension API to get and set policies.

chrome/browser/extensions/extension_managed_mode_api.cc

Index: chrome/browser/extensions/extension_managed_mode_api.cc
diff --git a/chrome/browser/extensions/extension_managed_mode_api.cc b/chrome/browser/extensions/extension_managed_mode_api.cc
index 0e747d5a75bba13f1b9415a747e251b284b8daab..c7194a8d91bf211866630ab6393d56a3aaaecbd2 100644
--- a/chrome/browser/extensions/extension_managed_mode_api.cc
+++ b/chrome/browser/extensions/extension_managed_mode_api.cc
@@ -14,6 +14,8 @@
 #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"
@@ -91,3 +93,29 @@ void EnterManagedModeFunction::SendResult(bool 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;
+}