[subresource_filter] Force the popup blocker on sites with activation

components/subresource_filter/content/browser/content_subresource_filter_throttle_manager.cc

Index: components/subresource_filter/content/browser/content_subresource_filter_throttle_manager.cc
diff --git a/components/subresource_filter/content/browser/content_subresource_filter_throttle_manager.cc b/components/subresource_filter/content/browser/content_subresource_filter_throttle_manager.cc
index eed2e7270716d46c651fbb1dea8f051a99b20748..89942ab5995be2ce56ea3d83b7b4be23f9eccb6a 100644
--- a/components/subresource_filter/content/browser/content_subresource_filter_throttle_manager.cc
+++ b/components/subresource_filter/content/browser/content_subresource_filter_throttle_manager.cc
@@ -178,6 +178,18 @@ void ContentSubresourceFilterThrottleManager::MaybeAppendNavigationThrottles(
   }
 }
 
+bool ContentSubresourceFilterThrottleManager::ShouldDisallowNewWindow() {
+  auto it = activated_frame_hosts_.find(web_contents()->GetMainFrame());
+  if (it == activated_frame_hosts_.end())
+    return false;
+  const ActivationState state = it->second->activation_state();
+  // This should trigger the standard popup blocking UI, so don't force the
+  // subresource filter specific UI here.
+  return state.activation_level == ActivationLevel::ENABLED &&
+         !state.filtering_disabled_for_document &&
+         !state.generic_blocking_rules_disabled;
+}
+
 std::unique_ptr<SubframeNavigationFilteringThrottle>
 ContentSubresourceFilterThrottleManager::
     MaybeCreateSubframeNavigationFilteringThrottle(