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..8c81a6d0e5bea98eb4a89f389a44faddd3d5c0f8 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"
@@ -98,3 +99,23 @@ bool GetOobeTimestampFunction::GetOobeTimestampOnFileThread() {
   SetResult(new base::StringValue(timestamp));
   return true;
 }
+
+AllowRedeemOffersFunction::AllowRedeemOffersFunction() {
+}
+
+AllowRedeemOffersFunction::~AllowRedeemOffersFunction() {
+}
+
+// Check the enterprise policy kAllowRedeemChromeOsRegistrationOffers flag
+// value. This policy is used to controll whether user can redeem offers using
+// enterprise device.
+bool AllowRedeemOffersFunction::RunImpl() {
+  bool allow = true;
+  // If the policy is not provided, "allow" will not be modified by
+  // GetBoolean.
+  // TODO(oscarpan): Check if we need to use PreparedTrustedValues.

[Mattias Nissler (ping if slow), 2013/02/05 13:06:53]

You should be using this. As pointed out by Xiyuan, it's not that hard - I don't
see why to postpone that bit.

[oscarpan, 2013/02/06 04:34:54]

Done.

+  chromeos::CrosSettings::Get()->GetBoolean(
+      chromeos::kAllowRedeemChromeOsRegistrationOffers, &allow);
+  SetResult(new base::FundamentalValue(allow));
+  return true;
+}