Enable <webview>.executeScript outside of Apps and Extensions [1]

extensions/renderer/programmatic_script_injector.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "extensions/renderer/programmatic_script_injector.h"
 
 #include <vector>
 
 #include "base/values.h"
 #include "content/public/renderer/render_view.h"
@@ skipping 64 matching lines @@
   if (params_->is_web_view) {
     if (frame->parent()) {
       // This is a subframe inside <webview>, so allow it.
       return PermissionsData::ACCESS_ALLOWED;
     }
 
     return effective_document_url == params_->webview_src
                ? PermissionsData::ACCESS_ALLOWED
                : PermissionsData::ACCESS_DENIED;
   }
+  DCHECK(injection_host->id().type() == HostID::EXTENSIONS);
 
   return injection_host->CanExecuteOnFrame(
       effective_document_url, top_url, tab_id, true /* is_declarative */);
 }
 
 std::vector<blink::WebScriptSource> ProgrammaticScriptInjector::GetJsSources(
     UserScript::RunLocation run_location) const {
   DCHECK_EQ(GetRunLocation(), run_location);
   DCHECK(params_->is_javascript);
 
@@ skipping 43 matching lines @@
 
   render_view_->Send(new ExtensionHostMsg_ExecuteCodeFinished(
       render_view_->GetRoutingID(),
       params_->request_id,
       error,
       url_,
       *results_));
 }
 
 }  // namespace extensions