Change loading custom auth extension to load from --auth-ext-path value.

chrome/browser/extensions/scoped_gaia_auth_extension.cc

Index: chrome/browser/extensions/scoped_gaia_auth_extension.cc
diff --git a/chrome/browser/extensions/scoped_gaia_auth_extension.cc b/chrome/browser/extensions/scoped_gaia_auth_extension.cc
index 03e5e72f7a83c17fac4fad90592a33f473e70e2f..7ad98ea8997f2f8ba6baf8c4cbd692674f490a49 100644
--- a/chrome/browser/extensions/scoped_gaia_auth_extension.cc
+++ b/chrome/browser/extensions/scoped_gaia_auth_extension.cc
@@ -34,7 +34,12 @@ void LoadGaiaAuthExtension(Profile* profile) {
   if (command_line->HasSwitch(switches::kAuthExtensionPath)) {
     base::FilePath auth_extension_path =
         command_line->GetSwitchValuePath(switches::kAuthExtensionPath);
-    component_loader->Add(IDR_GAIA_TEST_AUTH_MANIFEST, auth_extension_path);
+    std::string extension_id =

[achuithb, 2013/05/23 22:34:47]

let's make this const

[Tim Song, 2013/05/23 23:07:05]

Done.

+        component_loader->AddOrReplace(auth_extension_path);
+
+    if (extension_id.empty())
+        LOG(ERROR) << "Failed to load custom Gaia auth extension given by "
+            << "--auth-ext-path flag: " << auth_extension_path.value();

[achuithb, 2013/05/23 22:34:47]

nit: let's use switches::kAuthExtensionPath instead of --auth-ext-path in the
debug stmt.

[Tim Song, 2013/05/23 23:07:05]

Done.

     return;
   }