[TimeZoneMonitor] Decouple renderer side impl from content to blink.

chrome/test/base/run_all_unittests.cc

 // Copyright (c) 2011 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 "base/bind.h"
 #include "base/command_line.h"
 #include "base/test/launcher/unit_test_launcher.h"
 #include "base/test/test_io_thread.h"
 #include "chrome/test/base/chrome_unit_test_suite.h"
 #include "content/public/test/unittest_test_suite.h"
-#include "mojo/edk/embedder/embedder.h"
 #include "mojo/edk/test/scoped_ipc_support.h"
 
 int main(int argc, char **argv) {
   content::UnitTestTestSuite test_suite(new ChromeUnitTestSuite(argc, argv));
 
-  mojo::edk::Init();

[blundell, 2016/10/26 18:08:05]

Are all the test changes around Mojo initialization still worth doing in this CL
given the decision around it being OK to not initialize Mojo in
blink::initialize()?

   base::TestIOThread test_io_thread(base::TestIOThread::kAutoStart);
   mojo::edk::test::ScopedIPCSupport ipc_support(test_io_thread.task_runner());
 
   return base::LaunchUnitTests(
       argc, argv, base::Bind(&content::UnitTestTestSuite::Run,
                              base::Unretained(&test_suite)));
 }