Revert of Encapsulate CSS selector declarative content condition tracking

extensions/browser/api/declarative_content/content_rules_registry.h

Index: extensions/browser/api/declarative_content/content_rules_registry.h
diff --git a/extensions/browser/api/declarative_content/content_rules_registry.h b/extensions/browser/api/declarative_content/content_rules_registry.h
index 25c3ee6e42e3784959a0d079c5d22340d26029ba..f7f08bdb079a0ab36b3694c7ede75938861a130c 100644
--- a/extensions/browser/api/declarative_content/content_rules_registry.h
+++ b/extensions/browser/api/declarative_content/content_rules_registry.h
@@ -36,6 +36,12 @@
                       cache_delegate,
                       rules_registry_id) {}
 
+  // Applies all content rules given an update (CSS match change or
+  // page navigation, for now) from the renderer.
+  virtual void Apply(
+      content::WebContents* contents,
+      const std::vector<std::string>& matching_css_selectors) = 0;
+
   // Applies all content rules given that a tab was just navigated.
   virtual void DidNavigateMainFrame(
       content::WebContents* tab,