Refactoring: de-couple Extensions from "script injection System" [render side]:2

extensions/renderer/user_script_injector.cc

Index: extensions/renderer/user_script_injector.cc
diff --git a/extensions/renderer/user_script_injector.cc b/extensions/renderer/user_script_injector.cc
index c3e15ef36e909c4a9cd0ec3568f226e1ce252587..8bcdb3eba25335e33991c9612e50a82c25fd6179 100644
--- a/extensions/renderer/user_script_injector.cc
+++ b/extensions/renderer/user_script_injector.cc
@@ -8,6 +8,7 @@
 
 #include "base/lazy_instance.h"
 #include "content/public/common/url_constants.h"
+#include "content/public/renderer/render_view.h"
 #include "extensions/common/extension.h"
 #include "extensions/common/permissions/permissions_data.h"
 #include "extensions/renderer/injection_host.h"
@@ -127,6 +128,15 @@ PermissionsData::AccessType UserScriptInjector::CanExecuteOnFrame(
     blink::WebFrame* web_frame,
     int tab_id,
     const GURL& top_url) const {
+  if (script_->consumer_instance_type() ==
+      UserScript::ConsumerInstanceType::WEBVIEW) {
+    int routing_id = content::RenderView::FromWebView(web_frame->top()->view())
+                        ->GetRoutingID();
+    return script_->routing_info().render_view_id == routing_id
+        ? PermissionsData::ACCESS_ALLOWED
+        : PermissionsData::ACCESS_DENIED;
+  }
+
   // If we don't have a tab id, we have no UI surface to ask for user consent.
   // For now, we treat this as an automatic allow.
   if (tab_id == -1)