Mac: speculative fix for bug 105759 based on the assumption that we have a realm with an empty path.

chrome/browser/password_manager/password_store_mac.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/password_manager/password_store_mac.h"
 #include "chrome/browser/password_manager/password_store_mac_internal.h"
 
 #include <CoreServices/CoreServices.h>
 #include <set>
 #include <string>
@@ skipping 669 matching lines @@
   }
 
   if (server)
     *server = realm_as_url.host();
   if (is_secure)
     *is_secure = realm_as_url.SchemeIsSecure();
   if (port)
     *port = realm_as_url.has_port() ? atoi(realm_as_url.port().c_str()) : 0;
   if (security_domain) {
     // Strip the leading '/' off of the path to get the security domain.
-    *security_domain = realm_as_url.path().substr(1);
+    if (realm_as_url.path().length() > 0)
+      *security_domain = realm_as_url.path().substr(1);
+    else
+      security_domain->clear();
   }
   return true;
 }
 
 // Returns the Keychain SecAuthenticationType type corresponding to |scheme|.
 SecAuthenticationType MacKeychainPasswordFormAdapter::AuthTypeForScheme(
     PasswordForm::Scheme scheme) {
   switch (scheme) {
     case PasswordForm::SCHEME_HTML:   return kSecAuthenticationTypeHTMLForm;
     case PasswordForm::SCHEME_BASIC:  return kSecAuthenticationTypeHTTPBasic;
@@ skipping 307 matching lines @@
   owned_keychain_adapter.SetFindsOnlyOwnedItems(true);
   for (std::vector<PasswordForm*>::const_iterator i = forms.begin();
        i != forms.end(); ++i) {
     owned_keychain_adapter.RemovePassword(**i);
   }
 }
 
 void PasswordStoreMac::CreateNotificationService() {
   notification_service_.reset(new NotificationServiceImpl);
 }