Add instrumentation hooks to mesaure which subresource filter rules are used.

components/subresource_filter/core/common/document_subresource_filter.cc

Index: components/subresource_filter/core/common/document_subresource_filter.cc
diff --git a/components/subresource_filter/core/common/document_subresource_filter.cc b/components/subresource_filter/core/common/document_subresource_filter.cc
index 3895a3a88f8e5a87741519d51c9a5a1aa772d1b2..e48394da419f08d794e8a27cb3a916f6aac9711d 100644
--- a/components/subresource_filter/core/common/document_subresource_filter.cc
+++ b/components/subresource_filter/core/common/document_subresource_filter.cc
@@ -51,9 +51,21 @@ DocumentSubresourceFilter::DocumentSubresourceFilter(
     url::Origin document_origin,
     ActivationState activation_state,
     scoped_refptr<const MemoryMappedRuleset> ruleset)
+    : DocumentSubresourceFilter(document_origin,
+                                activation_state,
+                                ruleset,
+                                nullptr) {}
+
+DocumentSubresourceFilter::DocumentSubresourceFilter(
+    url::Origin document_origin,
+    ActivationState activation_state,
+    scoped_refptr<const MemoryMappedRuleset> ruleset,
+    std::unique_ptr<RuleRecorder> recorder)
     : activation_state_(activation_state),
       ruleset_(std::move(ruleset)),
-      ruleset_matcher_(ruleset_->data(), ruleset_->length()) {
+      ruleset_matcher_(ruleset_->data(),
+                       ruleset_->length(),
+                       std::move(recorder)) {
   DCHECK_NE(activation_state_.activation_level, ActivationLevel::DISABLED);
   if (!activation_state_.filtering_disabled_for_document)
     document_origin_.reset(new FirstPartyOrigin(std::move(document_origin)));