Allow explicitly whitelisted apps/extensions in public sessions

chrome/browser/extensions/extension_system.h

Index: chrome/browser/extensions/extension_system.h
diff --git a/chrome/browser/extensions/extension_system.h b/chrome/browser/extensions/extension_system.h
index 8a400705c20948a8ebed291af727510f9fa610a5..c88fc746bfb23b065fc1fd9410d5e1192b29f2e0 100644
--- a/chrome/browser/extensions/extension_system.h
+++ b/chrome/browser/extensions/extension_system.h
@@ -18,6 +18,12 @@ class ExtensionProcessManager;
 class ExtensionService;
 class Profile;
 
+#if defined(OS_CHROMEOS)
+namespace chromeos {
+class DeviceLocalAccountManagementPolicyProvider;
+}
+#endif  // defined(OS_CHROMEOS)
+
 namespace extensions {
 class Blacklist;
 class ErrorConsole;
@@ -213,6 +219,11 @@ class ExtensionSystemImpl : public ExtensionSystem {
     scoped_ptr<ExtensionWarningBadgeService> extension_warning_badge_service_;
     scoped_ptr<ErrorConsole> error_console_;
 
+#if defined(OS_CHROMEOS)
+    scoped_ptr<chromeos::DeviceLocalAccountManagementPolicyProvider>
+        device_local_account_management_policy_provider_;
+#endif
+
     OneShotEvent ready_;
   };