Factor out UrlPatternIndex from IndexedRuleset.

components/subresource_filter/core/common/document_subresource_filter_unittest.cc

Index: components/subresource_filter/core/common/document_subresource_filter_unittest.cc
diff --git a/components/subresource_filter/core/common/document_subresource_filter_unittest.cc b/components/subresource_filter/core/common/document_subresource_filter_unittest.cc
index 71562368cc6721bb1f9b48530f95f57666efb8ae..f447177ab8dee489ea6a922a067ee2ec3e51361f 100644
--- a/components/subresource_filter/core/common/document_subresource_filter_unittest.cc
+++ b/components/subresource_filter/core/common/document_subresource_filter_unittest.cc
@@ -11,6 +11,8 @@
 #include "components/subresource_filter/core/common/test_ruleset_creator.h"
 #include "components/subresource_filter/core/common/test_ruleset_utils.h"
 #include "testing/gtest/include/gtest/gtest.h"
+#include "url/gurl.h"
+#include "url/origin.h"
 
 namespace subresource_filter {
 
@@ -163,7 +165,7 @@ class SubresourceFilterComputeActivationStateTest : public ::testing::Test {
     activation_state.generic_blocking_rules_disabled =
         generic_blocking_rules_disabled;
     return activation_state;
-  };
+  }
 
   const MemoryMappedRuleset* ruleset() { return ruleset_.get(); }