Create --disable-extensions-except switch

chrome/browser/extensions/extension_system_impl.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 "chrome/browser/extensions/extension_system_impl.h"
 
 #include <algorithm>
 
 #include "base/base_switches.h"
 #include "base/bind.h"
@@ skipping 245 matching lines @@
   extension_service_->Init();
 
   // Make sure ExtensionSyncService is created.
   ExtensionSyncService::Get(profile_);
 
   // Make the chrome://extension-icon/ resource available.
   content::URLDataSource::Add(profile_, new ExtensionIconSource(profile_));
 
   quota_service_.reset(new QuotaService);
 
+  if (command_line->HasSwitch(switches::kDisableExtensionsExcept)) {
+    base::CommandLine::StringType path_list =

[Devlin, 2016/07/25 19:10:30]

The fact that the next 10 lines are almost identical to the 10 lines following
implies that we could refactor this a bit. ;)

[catmullings, 2016/07/27 01:29:46]

Done.

+        command_line->GetSwitchValueNative(switches::kDisableExtensionsExcept);
+    base::StringTokenizerT<base::CommandLine::StringType,
+                           base::CommandLine::StringType::const_iterator>
+        t(path_list, FILE_PATH_LITERAL(","));
+    while (t.GetNext()) {
+      std::string extension_id;
+      UnpackedInstaller::Create(extension_service_.get())
+          ->LoadFromCommandLine(base::FilePath(t.token()), &extension_id);
+      extension_service_->AddExtensionToWhitelist(extension_id);
+    }
+  }
   if (extensions_enabled) {
     // Load any extensions specified with --load-extension.
     // TODO(yoz): Seems like this should move into ExtensionService::Init.
     // But maybe it's no longer important.
     if (command_line->HasSwitch(switches::kLoadExtension)) {
       base::CommandLine::StringType path_list =
           command_line->GetSwitchValueNative(switches::kLoadExtension);
       base::StringTokenizerT<base::CommandLine::StringType,
                              base::CommandLine::StringType::const_iterator>
           t(path_list, FILE_PATH_LITERAL(","));
@@ skipping 190 matching lines @@
 void ExtensionSystemImpl::UnregisterExtensionWithRequestContexts(
     const std::string& extension_id,
     const UnloadedExtensionInfo::Reason reason) {
   BrowserThread::PostTask(
       BrowserThread::IO,
       FROM_HERE,
       base::Bind(&InfoMap::RemoveExtension, info_map(), extension_id, reason));
 }
 
 }  // namespace extensions