Prevent loading of component extensions in kiosk mode.

chrome/browser/extensions/extension_system.cc

 // Copyright (c) 2012 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/extension_system.h"
 
 #include "base/base_switches.h"
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/files/file_path.h"
@@ skipping 31 matching lines @@
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/chrome_version_info.h"
 #include "chrome/common/extensions/extension.h"
 #include "chrome/common/extensions/features/feature.h"
 #include "chrome/common/extensions/manifest.h"
 #include "chrome/common/pref_names.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/url_data_source.h"
 
 #if defined(OS_CHROMEOS)
+#include "chrome/browser/app_mode/app_mode_utils.h"
 #include "chrome/browser/chromeos/login/user_manager.h"
 #endif
 
 using content::BrowserThread;
 
 namespace extensions {
 
 //
 // ExtensionSystem
 //
@@ skipping 93 matching lines @@
   // load any extensions.
   {
     management_policy_.reset(new ManagementPolicy);
     RegisterManagementPolicyProviders();
   }
 
   bool skip_session_extensions = false;
 #if defined(OS_CHROMEOS)
   // Skip loading session extensions if we are not in a user session.
   skip_session_extensions = !chromeos::UserManager::Get()->IsUserLoggedIn();
-#endif
+  if (!chrome::IsRunningInForcedAppMode()) {
+    extension_service_->component_loader()->AddDefaultComponentExtensions(
+        skip_session_extensions);
+  }
+#else
   extension_service_->component_loader()->AddDefaultComponentExtensions(
       skip_session_extensions);
+#endif
   if (command_line->HasSwitch(switches::kLoadComponentExtension)) {
     CommandLine::StringType path_list = command_line->GetSwitchValueNative(
         switches::kLoadComponentExtension);
     base::StringTokenizerT<CommandLine::StringType,
         CommandLine::StringType::const_iterator> t(path_list,
                                                    FILE_PATH_LITERAL(","));
     while (t.GetNext()) {
       // Load the component extension manifest synchronously.
       // Blocking the UI thread is acceptable here since
       // this flag designated for developers.
@@ skipping 278 matching lines @@
 void ExtensionSystemImpl::UnregisterExtensionWithRequestContexts(
     const std::string& extension_id,
     const extension_misc::UnloadedExtensionReason reason) {
   BrowserThread::PostTask(
       BrowserThread::IO, FROM_HERE,
       base::Bind(&ExtensionInfoMap::RemoveExtension, info_map(),
                  extension_id, reason));
 }
 
 }  // namespace extensions