AppShell support for Mac.

extensions/shell/browser/shell_browser_main_parts.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 "extensions/shell/browser/shell_browser_main_parts.h"
 
 #include <string>
 
 #include "base/command_line.h"
 #include "base/prefs/pref_service.h"
@@ skipping 70 matching lines @@
       extension_system_(nullptr),
       parameters_(parameters),
       run_message_loop_(true),
       browser_main_delegate_(browser_main_delegate) {
 }
 
 ShellBrowserMainParts::~ShellBrowserMainParts() {
   DCHECK(!devtools_http_handler_);
 }
 
+#if !defined(OS_MACOSX)
 void ShellBrowserMainParts::PreMainMessageLoopStart() {
   // TODO(jamescook): Initialize touch here?
 }
+#endif
 
 void ShellBrowserMainParts::PostMainMessageLoopStart() {
 #if defined(OS_CHROMEOS)
   // Perform initialization of D-Bus objects here rather than in the below
   // helper classes so those classes' tests can initialize stub versions of the
   // D-Bus objects.
   chromeos::DBusThreadManager::Initialize();
 
   chromeos::NetworkHandler::Initialize();
   network_controller_.reset(new ShellNetworkController(
@@ skipping 165 matching lines @@
 }
 
 void ShellBrowserMainParts::CreateExtensionSystem() {
   DCHECK(browser_context_);
   extension_system_ = static_cast<ShellExtensionSystem*>(
       ExtensionSystem::Get(browser_context_.get()));
   extension_system_->InitForRegularProfile(true);
 }
 
 }  // namespace extensions