Add a basic browser to mash that uses the navigation service.

services/navigation/content_client/main_delegate.cc

 // Copyright 2016 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 "services/navigation/content_client/main_delegate.h"
 
 #include "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/path_service.h"
 #include "content/public/common/content_switches.h"
@@ skipping 11 matching lines @@
       *base::CommandLine::ForCurrentProcess();
   std::string process_type =
       command_line.GetSwitchValueASCII(switches::kProcessType);
 
   content::SetContentClient(&content_client_);
 
   return false;
 }
 
 void MainDelegate::PreSandboxStartup() {
+  base::FilePath path;
+  PathService::Get(base::DIR_MODULE, &path);
+  base::FilePath pak_path = path.Append(FILE_PATH_LITERAL("navigation.pak"));
+  ui::ResourceBundle::InitSharedInstanceWithPakPath(pak_path);
   ui::InitializeInputMethodForTesting();
 }
 
 content::ContentBrowserClient* MainDelegate::CreateContentBrowserClient() {
   browser_client_.reset(new ContentBrowserClient);
   return browser_client_.get();
 }
 
 }  // namespace navigation