Introduce AsyncDocumentSubresourceFilter.

components/test_runner/mock_web_document_subresource_filter.cc

 // Copyright 2016 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 "components/test_runner/mock_web_document_subresource_filter.h"
 
 #include <algorithm>
 
 #include "base/strings/string_util.h"
 #include "third_party/WebKit/public/platform/WebURL.h"
 #include "url/gurl.h"
 
 namespace test_runner {
 
 MockWebDocumentSubresourceFilter::MockWebDocumentSubresourceFilter(
     const std::vector<std::string>& disallowed_path_suffixes)
     : disallowed_path_suffixes_(disallowed_path_suffixes) {}
 
 MockWebDocumentSubresourceFilter::~MockWebDocumentSubresourceFilter() {}
 
-blink::WebDocumentSubresourceFilter::LoadPolicy
+blink::WebDocumentSubresourceFilterLoadPolicy
 MockWebDocumentSubresourceFilter::getLoadPolicy(
     const blink::WebURL& resource_url,
     blink::WebURLRequest::RequestContext /* ignored */) {
   const std::string resource_path(GURL(resource_url).path());
   return std::find_if(disallowed_path_suffixes_.begin(),
                       disallowed_path_suffixes_.end(),
                       [&resource_path](const std::string& suffix) {
                         return base::EndsWith(resource_path, suffix,
                                               base::CompareCase::SENSITIVE);
                       }) == disallowed_path_suffixes_.end()
-             ? Allow
-             : Disallow;
+             ? blink::WebDocumentSubresourceFilterLoadPolicy::Allow
+             : blink::WebDocumentSubresourceFilterLoadPolicy::Disallow;
 }
 
 void MockWebDocumentSubresourceFilter::reportDisallowedLoad() {}
 
 }  // namespace test_runner