Revert of Restrict use of two app-launching command line flags

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 257 matching lines @@
     // 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(","));
       while (t.GetNext()) {
         std::string extension_id;
-        UnpackedInstaller::Create(extension_service_.get())
-            ->LoadFromCommandLine(base::FilePath(t.token()), &extension_id,
-                                  false /* only_allow_apps */);
+        UnpackedInstaller::Create(extension_service_.get())->
+            LoadFromCommandLine(base::FilePath(t.token()), &extension_id);
       }
     }
   }
 }
 
 void ExtensionSystemImpl::Shared::Shutdown() {
   if (content_verifier_.get())
     content_verifier_->Shutdown();
   if (extension_service_)
     extension_service_->Shutdown();
@@ skipping 176 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