Implement blink::Platform::yieldCurrentThread()

mojo/services/html_viewer/blink_platform_impl.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 "mojo/services/html_viewer/blink_platform_impl.h"
 
 #include <cmath>
 
 #include "base/rand_util.h"
 #include "base/stl_util.h"
 #include "base/synchronization/waitable_event.h"
+#include "base/threading/platform_thread.h"
 #include "base/time/time.h"
 #include "mojo/public/cpp/application/application_impl.h"
 #include "mojo/services/html_viewer/webclipboard_impl.h"
 #include "mojo/services/html_viewer/webcookiejar_impl.h"
 #include "mojo/services/html_viewer/websockethandle_impl.h"
 #include "mojo/services/html_viewer/webthread_impl.h"
 #include "mojo/services/html_viewer/weburlloader_impl.h"
 #include "net/base/data_url.h"
 #include "net/base/mime_util.h"
 #include "net/base/net_errors.h"
@@ skipping 192 matching lines @@
   scoped_refptr<base::MessageLoopProxy> message_loop =
       base::MessageLoopProxy::current();
   if (!message_loop.get())
     return NULL;
 
   thread = new WebThreadImplForMessageLoop(message_loop.get());
   current_thread_slot_.Set(thread);
   return thread;
 }
 
+void BlinkPlatformImpl::yieldCurrentThread() {
+  base::PlatformThread::YieldCurrentThread();
+}
+
 blink::WebWaitableEvent* BlinkPlatformImpl::createWaitableEvent() {
   return new WebWaitableEventImpl();
 }
 
 blink::WebWaitableEvent* BlinkPlatformImpl::waitMultipleEvents(
     const blink::WebVector<blink::WebWaitableEvent*>& web_events) {
   std::vector<base::WaitableEvent*> events;
   for (size_t i = 0; i < web_events.size(); ++i)
     events.push_back(static_cast<WebWaitableEventImpl*>(web_events[i])->impl());
   size_t idx = base::WaitableEvent::WaitMany(
       vector_as_array(&events), events.size());
   DCHECK_LT(idx, web_events.size());
   return web_events[idx];
 }
 
 // static
 void BlinkPlatformImpl::DestroyCurrentThread(void* thread) {
   WebThreadImplForMessageLoop* impl =
       static_cast<WebThreadImplForMessageLoop*>(thread);
   delete impl;
 }
 
 }  // namespace mojo