Initialize per-ChromeOS-user NSS slots and provide the functions to access them.

chrome/browser/profiles/profile_io_data.h

Index: chrome/browser/profiles/profile_io_data.h
diff --git a/chrome/browser/profiles/profile_io_data.h b/chrome/browser/profiles/profile_io_data.h
index 136235d543e9a5b79d2f0ea604ab0137cb29efe8..d68addeb2c2d0f76b9a12a60dc0344c6cf839849 100644
--- a/chrome/browser/profiles/profile_io_data.h
+++ b/chrome/browser/profiles/profile_io_data.h
@@ -177,6 +177,12 @@ class ProfileIOData {
     return transport_security_state_.get();
   }
 
+#if defined(OS_CHROMEOS)
+  std::string username_hash() const {
+    return username_hash_;
+  }
+#endif
+
   bool is_incognito() const {
     return is_incognito_;
   }
@@ -270,6 +276,10 @@ class ProfileIOData {
     scoped_refptr<const ManagedModeURLFilter> managed_mode_url_filter;
 #endif
 
+#if defined(OS_CHROMEOS)
+    std::string username_hash;
+#endif
+
     // The profile this struct was populated from. It's passed as a void* to
     // ensure it's not accidently used on the IO thread. Before using it on the
     // UI thread, call ProfileManager::IsValidProfile to ensure it's alive.
@@ -494,6 +504,7 @@ class ProfileIOData {
       http_server_properties_;
 #if defined(OS_CHROMEOS)
   mutable scoped_ptr<policy::PolicyCertVerifier> cert_verifier_;
+  mutable std::string username_hash_;
 #endif
 
   mutable scoped_ptr<net::TransportSecurityPersister>