mandoline: Sandbox mojo:browser and mojo:omnibox.

mandoline/services/core_services/main.cc

 // Copyright 2015 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 "mandoline/services/core_services/core_services_application_delegate.h"
 #include "mojo/application/public/cpp/application_runner.h"
 #include "third_party/mojo/src/mojo/public/c/system/main.h"
 
 // TODO(erg): Much of this will be the same between mojo applications. Maybe we
 // could centralize this code?
 #if defined(OS_LINUX) && !defined(OS_ANDROID)
 #include "base/rand_util.h"
 #include "base/sys_info.h"
+#include "third_party/icu/source/i18n/unicode/timezone.h"
 
 // TODO(erg): Much of this was coppied from zygote_main_linux.cc
 extern "C" {
 void __attribute__((visibility("default"))) MojoSandboxWarm() {
   base::RandUint64();
   base::SysInfo::AmountOfPhysicalMemory();
   base::SysInfo::MaxSharedMemorySize();
   base::SysInfo::NumberOfProcessors();
 
-  // TODO(erg): icu does timezone initialization here.
+  // ICU DateFormat class (used in base/time_format.cc) needs to get the
+  // Olson timezone ID by accessing the zoneinfo files on disk. After
+  // TimeZone::createDefault is called once here, the timezone ID is
+  // cached and there's no more need to access the file system.
+  scoped_ptr<icu::TimeZone> zone(icu::TimeZone::createDefault());
 
   // TODO(erg): Perform OpenSSL warmup; it wants access to /dev/urandom.
-
-  // TODO(erg): Initialize SkFontConfigInterface; it has its own odd IPC system
-  // which probably must be ported to mojo.
 }
 }
 #endif  // defined(OS_LINUX) && !defined(OS_ANDROID)
 
 MojoResult MojoMain(MojoHandle shell_handle) {
   mojo::ApplicationRunner runner(
       new core_services::CoreServicesApplicationDelegate);
   return runner.Run(shell_handle);
 }