Remove WebWaitableEvent and replace it with WaitableEvent.

third_party/WebKit/Source/platform/threading/BackgroundTaskRunnerTest.cpp

 // 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 "platform/threading/BackgroundTaskRunner.h"
 
 #include "platform/ThreadSafeFunctional.h"
-#include "public/platform/Platform.h"
+#include "platform/WaitableEvent.h"
 #include "public/platform/WebTraceLocation.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 
 namespace {
 
 using namespace blink;
 
-void PingPongTask(WebWaitableEvent* doneEvent)
+void PingPongTask(WaitableEvent* doneEvent)
 {
     doneEvent->signal();
 }
 
 class BackgroundTaskRunnerTest : public testing::Test {
 };
 
 TEST_F(BackgroundTaskRunnerTest, RunShortTaskOnBackgroundThread)
 {
-    OwnPtr<WebWaitableEvent> doneEvent = adoptPtr(Platform::current()->createWaitableEvent());
+    OwnPtr<WaitableEvent> doneEvent = adoptPtr(new WaitableEvent());
     BackgroundTaskRunner::postOnBackgroundThread(BLINK_FROM_HERE, threadSafeBind(&PingPongTask, AllowCrossThreadAccess(doneEvent.get())), BackgroundTaskRunner::TaskSizeShortRunningTask);
     // Test passes by not hanging on the following wait().
     doneEvent->wait();
 }
 
 TEST_F(BackgroundTaskRunnerTest, RunLongTaskOnBackgroundThread)
 {
-    OwnPtr<WebWaitableEvent> doneEvent = adoptPtr(Platform::current()->createWaitableEvent());
+    OwnPtr<WaitableEvent> doneEvent = adoptPtr(new WaitableEvent());
     BackgroundTaskRunner::postOnBackgroundThread(BLINK_FROM_HERE, threadSafeBind(&PingPongTask, AllowCrossThreadAccess(doneEvent.get())), BackgroundTaskRunner::TaskSizeLongRunningTask);
     // Test passes by not hanging on the following wait().
     doneEvent->wait();
 }
 
 } // unnamed namespace