[Extensions] Adjust script injection reporting to the browser side

extensions/renderer/injection_host.h

Index: extensions/renderer/injection_host.h
diff --git a/extensions/renderer/injection_host.h b/extensions/renderer/injection_host.h
index a142b1db1c70650bb64f2c6850baafc93e8b5548..6c23c2d3cd2cab7c7bdb9e87665c18e283eea452 100644
--- a/extensions/renderer/injection_host.h
+++ b/extensions/renderer/injection_host.h
@@ -30,6 +30,10 @@ class InjectionHost {
       int tab_id,
       bool is_declarative) const = 0;
 
+  // Returns true if the browser should be notified of any injections the host
+  // performs.
+  virtual bool ShouldNotifyBrowserOfInjection() const = 0;
+
   const HostID& id() const { return id_; }
  private:
   // The ID of the host.