Componentize IDR_NET_ERROR_HTML for sharing it with iOS.

chrome/browser/resources_util_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 "chrome/browser/resources_util.h"
 
 #include <stddef.h>
 
 #include "base/macros.h"
 #include "build/build_config.h"
+#include "grit/components_scaled_resources.h"
 #include "grit/theme_resources.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/resources/grit/ui_resources.h"
 
 #if defined(OS_CHROMEOS)
 #include "grit/ui_chromeos_resources.h"
 #endif
 
 TEST(ResourcesUtil, SpotCheckIds) {
   const struct {
@@ skipping 10 matching lines @@
     {"IDR_LOGIN_DEFAULT_USER", IDR_LOGIN_DEFAULT_USER},
 #endif
     // Unknown names should be invalid and return -1.
     {"foobar", -1},
     {"backstar", -1},
   };
 
   for (size_t i = 0; i < arraysize(kCases); ++i)
     EXPECT_EQ(kCases[i].id, ResourcesUtil::GetThemeResourceId(kCases[i].name));
 }