[Extensions] Adjust script injection reporting to the browser side

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 d7edd666165ec3d3ed1c21f12557287748c20899..e11e1e62dda7280a26aced3b6a2ef663f19aece9 100644
--- a/extensions/renderer/script_injection.h
+++ b/extensions/renderer/script_injection.h
@@ -55,8 +55,9 @@ class ScriptInjection {
   int64 request_id() const { return request_id_; }
 
  private:
-  // Send a message to the browser requesting permission to execute.
-  void RequestPermission();
+  // Sends a message to the browser, either that the script injection would
+  // like to inject, or to notify the browser that it is currently injecting.
+  void SendInjectionMessage(bool request_permission);
 
   // Injects the script, optionally populating |scripts_run_info|.
   void Inject(const Extension* extension, ScriptsRunInfo* scripts_run_info);
@@ -73,6 +74,9 @@ class ScriptInjection {
   // Notify that we will not inject, and mark it as acknowledged.
   void NotifyWillNotInject(ScriptInjector::InjectFailureReason reason);
 
+  // Notifies the browser of script injection, if appropriate.
+  void NotifyBrowserOfInjection(const Extension* extension);
+
   // The injector for this injection.
   scoped_ptr<ScriptInjector> injector_;