Small fixes to allow unit tests to compile with gcc 4.7.x (tested with gcc 4.7.2)

chrome/browser/password_manager/password_store_x_unittest.cc

 // Copyright (c) 2012 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 "base/basictypes.h"
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/file_util.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/platform_file.h"
@@ skipping 228 matching lines @@
     PasswordFormData data = {
       PasswordForm::SCHEME_HTML,
       realm.c_str(),
       origin.c_str(),
       action.c_str(),
       L"submit_element",
       L"username_element",
       L"password_element",
       autofillable ? L"username_value" : NULL,
       autofillable ? L"password_value" : NULL,
-      autofillable, false, i + 1 };
+      autofillable, false, static_cast<double>(i + 1) };
     forms->push_back(CreatePasswordFormFromData(data));
   }
 }
 
 }  // anonymous namespace
 
 enum BackendType {
   NO_BACKEND,
   FAILING_BACKEND,
   WORKING_BACKEND
@@ skipping 280 matching lines @@
 
 INSTANTIATE_TEST_CASE_P(NoBackend,
                         PasswordStoreXTest,
                         testing::Values(NO_BACKEND));
 INSTANTIATE_TEST_CASE_P(FailingBackend,
                         PasswordStoreXTest,
                         testing::Values(FAILING_BACKEND));
 INSTANTIATE_TEST_CASE_P(WorkingBackend,
                         PasswordStoreXTest,
                         testing::Values(WORKING_BACKEND));