[Extensions] Rename ActiveScriptController to ExtensionActionExecutor

The ActiveScriptController will control more than just active scripts (e.g.,
webRequests), so calling it that doesn't really make sense. Rename to
ExtensionActionExecutor.

BUG=

Review URL: https://codereview.chromium.org/1804753002

Cr-Commit-Position: refs/heads/master@{#381276}
diff --git a/chrome/browser/extensions/tab_helper.h b/chrome/browser/extensions/tab_helper.h
index 702bb1c..45de7cf 100644
--- a/chrome/browser/extensions/tab_helper.h
+++ b/chrome/browser/extensions/tab_helper.h
@@ -39,7 +39,7 @@
 }
 
 namespace extensions {
-class ActiveScriptController;
+class ExtensionActionRunner;
 class BookmarkAppHelper;
 class Extension;
 class LocationBarController;
@@ -105,8 +105,8 @@
     return location_bar_controller_.get();
   }
 
-  ActiveScriptController* active_script_controller() {
-    return active_script_controller_.get();
+  ExtensionActionRunner* extension_action_runner() {
+    return extension_action_runner_.get();
   }
 
   ActiveTabPermissionGranter* active_tab_permission_granter() {
@@ -246,7 +246,7 @@
 
   scoped_ptr<LocationBarController> location_bar_controller_;
 
-  scoped_ptr<ActiveScriptController> active_script_controller_;
+  scoped_ptr<ExtensionActionRunner> extension_action_runner_;
 
   scoped_ptr<ActiveTabPermissionGranter> active_tab_permission_granter_;