Introduce AsyncDocumentSubresourceFilter.

components/subresource_filter/content/common/document_subresource_filter.h

Index: components/subresource_filter/content/common/document_subresource_filter.h
diff --git a/components/subresource_filter/content/common/document_subresource_filter.h b/components/subresource_filter/content/common/document_subresource_filter.h
index 8de7df3700d0ebba50e2f7951cb92abf86c22494..7e5b299d3f4f6271e7b425283336ccd63c7c9df4 100644
--- a/components/subresource_filter/content/common/document_subresource_filter.h
+++ b/components/subresource_filter/content/common/document_subresource_filter.h
@@ -21,6 +21,7 @@
 #include "components/subresource_filter/core/common/indexed_ruleset.h"
 #include "components/subresource_filter/core/common/proto/rules.pb.h"
 #include "third_party/WebKit/public/platform/WebDocumentSubresourceFilter.h"
+#include "third_party/WebKit/public/platform/WebDocumentSubresourceFilterLoadPolicy.h"

[jochen (gone - plz use gerrit), 2017/02/16 14:46:21]

please change subresource_filter/content/common/DEPS to enumerate individual
webkit headers, instead of allowing blanket inclusion.

also in common/ we can only depend on POD and enum headers.

[pkalinnikov, 2017/02/17 17:51:38]

Now common/ doesn't depend on blink.

 #include "url/gurl.h"
 #include "url/origin.h"
 
@@ -57,13 +58,15 @@ class DocumentSubresourceFilter
     : public blink::WebDocumentSubresourceFilter,
       public base::SupportsWeakPtr<DocumentSubresourceFilter> {
  public:
+  using LoadPolicy = blink::WebDocumentSubresourceFilterLoadPolicy;
+
   // 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,