Disable/enable echo for enterprise device.

chrome/browser/chromeos/extensions/echo_private_api.cc

Index: chrome/browser/chromeos/extensions/echo_private_api.cc
diff --git a/chrome/browser/chromeos/extensions/echo_private_api.cc b/chrome/browser/chromeos/extensions/echo_private_api.cc
index 51f195dbf4e0e44638fb24e52fb98891c716a1bf..665509bd9b8f87e661c83254257faeb31c73a5d1 100644
--- a/chrome/browser/chromeos/extensions/echo_private_api.cc
+++ b/chrome/browser/chromeos/extensions/echo_private_api.cc
@@ -14,6 +14,7 @@
 #include "base/time.h"
 #include "base/values.h"
 #include "chrome/browser/chromeos/kiosk_mode/kiosk_mode_settings.h"
+#include "chrome/browser/chromeos/settings/cros_settings.h"
 #include "chrome/browser/chromeos/system/statistics_provider.h"
 #include "chrome/common/extensions/extension.h"
 #include "content/public/browser/browser_thread.h"
@@ -34,6 +35,7 @@ base::Value* GetValueForRegistrationCodeType(std::string& type) {
   chromeos::system::StatisticsProvider* provider =
       chromeos::system::StatisticsProvider::GetInstance();
   std::string result;
+  // TODO(oscarpan) update to use PrepareTrustedValues.

[Mattias Nissler (ping if slow), 2013/02/07 10:45:57]

still missing a policy check here?

[oscarpan, 2013/02/07 13:10:56]

Done.

   if (!chromeos::KioskModeSettings::Get()->IsKioskModeEnabled()) {
     // In Kiosk mode, we effectively disable the registration API
     // by always returning an empty code.
@@ -98,3 +100,34 @@ bool GetOobeTimestampFunction::GetOobeTimestampOnFileThread() {
   SetResult(new base::StringValue(timestamp));
   return true;
 }
+
+AllowRedeemOffersFunction::AllowRedeemOffersFunction() {
+}
+
+AllowRedeemOffersFunction::~AllowRedeemOffersFunction() {
+}
+
+void AllowRedeemOffersFunction::AllowRedeemOffersCallback() {
+  chromeos::CrosSettingsProvider::TrustedStatus status =
+          chromeos::CrosSettings::Get()->PrepareTrustedValues(
+              base::Bind(&AllowRedeemOffersFunction::AllowRedeemOffersCallback,
+                         base::Unretained(this)));
+  if (status == chromeos::CrosSettingsProvider::TEMPORARILY_UNTRUSTED) {

[Mattias Nissler (ping if slow), 2013/02/07 10:45:57]

nit: no need for curly braces.

[oscarpan, 2013/02/07 13:10:56]

Done.

+    return;
+  }
+  bool allow;
+  if (!chromeos::CrosSettings::Get()->GetBoolean(
+          chromeos::kAllowRedeemChromeOsRegistrationOffers, &allow)) {
+    allow = true;
+  }
+  SetResult(new base::FundamentalValue(allow));
+  SendResponse(true);
+}
+
+// Check the enterprise policy kAllowRedeemChromeOsRegistrationOffers flag
+// value. This policy is used to control whether user can redeem offers using
+// enterprise device.
+bool AllowRedeemOffersFunction::RunImpl() {
+  AllowRedeemOffersCallback();
+  return true;
+}