[Extensions] Add renderer-side logic to short circuit activity logging

extensions/renderer/script_injection.h

Index: extensions/renderer/script_injection.h
diff --git a/extensions/renderer/script_injection.h b/extensions/renderer/script_injection.h
index a7a44b6272148dac7aa064e0807d1ca20a452f63..7b501f40e1da0bd0240760647cfd708a6616071c 100644
--- a/extensions/renderer/script_injection.h
+++ b/extensions/renderer/script_injection.h
@@ -55,7 +55,8 @@ class ScriptInjection {
   ScriptInjection(std::unique_ptr<ScriptInjector> injector,
                   content::RenderFrame* render_frame,
                   std::unique_ptr<const InjectionHost> injection_host,
-                  UserScript::RunLocation run_location);
+                  UserScript::RunLocation run_location,
+                  bool log_activity);
   ~ScriptInjection();
 
   // Try to inject the script at the |current_location|. This returns
@@ -132,6 +133,9 @@ class ScriptInjection {
   // Whether or not the injection successfully injected JS.
   bool did_inject_js_;
 
+  // Whether or not we should log dom activity for this injection.
+  bool log_activity_;
+
   // Results storage.
   std::unique_ptr<base::Value> execution_result_;