Introduce AsyncDocumentSubresourceFilter.

components/subresource_filter/content/common/document_subresource_filter.h

 // 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.
 
 #ifndef COMPONENTS_SUBRESOURCE_FILTER_CONTENT_COMMON_DOCUMENT_SUBRESOURCE_FILTER_H_
 #define COMPONENTS_SUBRESOURCE_FILTER_CONTENT_COMMON_DOCUMENT_SUBRESOURCE_FILTER_H_
 
 #include <stddef.h>
 
 #include <memory>
@@ skipping 45 matching lines @@
 class DocumentSubresourceFilter
     : public blink::WebDocumentSubresourceFilter,
       public base::SupportsWeakPtr<DocumentSubresourceFilter> {
  public:
   // Constructs a new filter that will:
   //  -- Operate in a manner prescribed in |activation_state|.
   //  -- Filter subresource loads in the scope of a document loaded from
   //     |document_origin|.
   //  -- Hold a reference to and use |ruleset| for its entire lifetime.
   //  -- Invoke |first_disallowed_load_callback|, if it is non-null, on the
-  //     first disallowed subresource load.
+  //     first reportDisallowedLoad() call.
   DocumentSubresourceFilter(url::Origin document_origin,
                             ActivationState activation_state,
                             scoped_refptr<const MemoryMappedRuleset> ruleset,
                             base::OnceClosure first_disallowed_load_callback);
 
   ~DocumentSubresourceFilter() override;
 
   const DocumentLoadStatistics& statistics() const { return statistics_; }
 
   // blink::WebDocumentSubresourceFilter:
@@ skipping 16 matching lines @@
 
   base::OnceClosure first_disallowed_load_callback_;
   DocumentLoadStatistics statistics_;
 
   DISALLOW_COPY_AND_ASSIGN(DocumentSubresourceFilter);
 };
 
 }  // namespace subresource_filter
 
 #endif  // COMPONENTS_SUBRESOURCE_FILTER_CONTENT_COMMON_DOCUMENT_SUBRESOURCE_FILTER_H_