PART1: Initiated the SignedSettings refactoring.

chrome/browser/chromeos/login/user_manager.cc

Index: chrome/browser/chromeos/login/user_manager.cc
diff --git a/chrome/browser/chromeos/login/user_manager.cc b/chrome/browser/chromeos/login/user_manager.cc
index 2d8d85bd65dc7498ce1870d9cbb2b7d5c7996347..04de819597ec6c930e2c7628a48d8bfc06d08727 100644
--- a/chrome/browser/chromeos/login/user_manager.cc
+++ b/chrome/browser/chromeos/login/user_manager.cc
@@ -4,6 +4,7 @@
 
 #include "chrome/browser/chromeos/login/user_manager.h"
 
+#include "base/bind.h"
 #include "base/command_line.h"
 #include "base/compiler_specific.h"
 #include "base/file_path.h"
@@ -20,6 +21,7 @@
 #include "base/values.h"
 #include "crypto/nss_util.h"
 #include "chrome/browser/browser_process.h"
+#include "chrome/browser/chromeos/cros_settings.h"
 #include "chrome/browser/chromeos/cros/cros_library.h"
 #include "chrome/browser/chromeos/cros/cryptohome_library.h"
 #include "chrome/browser/chromeos/input_method/input_method_manager.h"
@@ -194,15 +196,18 @@ class RemoveAttempt : public CryptohomeLibrary::Delegate {
   void RemoveUser() {
     // Owner is not allowed to be removed from the device.
     // Must not proceed without signature verification.
-    UserCrosSettingsProvider user_settings;
-    bool trusted_owner_available = user_settings.RequestTrustedOwner(
-        method_factory_.NewRunnableMethod(&RemoveAttempt::RemoveUser));
+    CrosSettings* cros_settings = CrosSettings::Get();
+    bool trusted_owner_available = cros_settings->GetTrusted(
+        kDeviceOwner,
+        base::Bind(&RemoveAttempt::RemoveUser, base::Unretained(this)));

[Denis Lagno, 2011/09/20 14:05:22]

is it safe to replace ScopedMethodFactory by this?
AFAIK the former traces lifetime of an object?

[pastarmovj, 2011/09/20 17:11:52]

Done.

     if (!trusted_owner_available) {
       // Value of owner email is still not verified.
       // Another attempt will be invoked after verification completion.
       return;
     }
-    if (user_email_ == UserCrosSettingsProvider::cached_owner()) {
+    std::string owner;
+    cros_settings->GetString(kDeviceOwner, &owner);
+    if (user_email_ == owner) {
       // Owner is not allowed to be removed from the device. Probably on
       // the stack, so deffer the deletion.
       MessageLoop::current()->DeleteSoon(FROM_HERE, this);