Delay request loading until all user scripts that request depends on are ready.

chrome/browser/extensions/extensions_service.cc

 // Copyright (c) 2009 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 "chrome/browser/extensions/extensions_service.h"
 
 #include "base/command_line.h"
 #include "base/file_util.h"
 #include "base/string_util.h"
 #include "base/values.h"
@@ skipping 567 matching lines @@
 
   if (!extension) {
     ReportExtensionLoadError(extension_path, error);
     return;
   }
 
   extension->set_location(Extension::LOAD);
   ReportExtensionLoaded(extension);
 }
 
-
 void ExtensionsServiceBackend::ReportExtensionLoadError(
     const FilePath& extension_path, const std::string &error) {
   ::ReportExtensionLoadError(extension_path, error, alert_on_error_);
 }
 
 void ExtensionsServiceBackend::ReportExtensionLoaded(Extension* extension) {
   frontend_loop_->PostTask(FROM_HERE, NewRunnableMethod(
       frontend_, &ExtensionsService::OnExtensionLoaded, extension));
 }
 
@@ skipping 73 matching lines @@
       linked_ptr<ExternalExtensionProvider>(test_provider);
 }
 
 void ExtensionsServiceBackend::OnExternalExtensionFound(
     const std::string& id, const Version* version, const FilePath& path,
     Extension::Location location) {
   frontend_loop_->PostTask(FROM_HERE, NewRunnableMethod(frontend_,
       &ExtensionsService::OnExternalExtensionFound, id, version->GetString(),
       path, location));
 }