Adds a flag to support "Virtual Time" to the blink scheduler

content/test/test_blink_web_unit_test_support.cc

 // Copyright 2013 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 "content/test/test_blink_web_unit_test_support.h"
 
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/path_service.h"
@@ skipping 92 matching lines @@
     // should be no task posted to this task runner. The message loop is not
     // created before this initialization because some tests need specific kinds
     // of message loops, and their types are not known upfront. Some tests also
     // create their own thread bundles or message loops, and doing the same in
     // TestBlinkWebUnitTestSupport would introduce a conflict.
     dummy_task_runner = make_scoped_refptr(new DummyTaskRunner());
     dummy_task_runner_handle.reset(
         new base::ThreadTaskRunnerHandle(dummy_task_runner));
   }
   renderer_scheduler_ = make_scoped_ptr(new scheduler::RendererSchedulerImpl(
-      scheduler::LazySchedulerMessageLoopDelegateForTests::Create()));
+      scheduler::LazySchedulerMessageLoopDelegateForTests::Create(),
+      scheduler::RendererSchedulerImpl::TimeSource::NORMAL));
   web_thread_.reset(new scheduler::WebThreadImplForRendererScheduler(
       renderer_scheduler_.get()));
 
   blink::initialize(this);
   blink::setLayoutTestMode(true);
   blink::WebRuntimeFeatures::enableApplicationCache(true);
   blink::WebRuntimeFeatures::enableDatabase(true);
   blink::WebRuntimeFeatures::enableNotifications(true);
   blink::WebRuntimeFeatures::enableTouch(true);
 
@@ skipping 245 matching lines @@
   base::MessageLoop::current()->QuitWhenIdle();
 }
 
 void TestBlinkWebUnitTestSupport::getPluginList(
     bool refresh, blink::WebPluginListBuilder* builder) {
   builder->addPlugin("pdf", "pdf", "pdf-files");
   builder->addMediaTypeToLastPlugin("application/pdf", "pdf");
 }
 
 }  // namespace content