Implement blink::Platform::yieldCurrentThread()

content/child/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 "content/child/blink_platform_impl.h"
 
 #include <math.h>
 
 #include <vector>
 
 #include "base/allocator/allocator_extension.h"
 #include "base/bind.h"
 #include "base/files/file_path.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/singleton.h"
 #include "base/message_loop/message_loop.h"
 #include "base/metrics/histogram.h"
 #include "base/metrics/sparse_histogram.h"
 #include "base/metrics/stats_counters.h"
 #include "base/process/process_metrics.h"
 #include "base/rand_util.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/synchronization/lock.h"
 #include "base/synchronization/waitable_event.h"
 #include "base/sys_info.h"
+#include "base/threading/platform_thread.h"
 #include "base/time/time.h"
 #include "blink/public/resources/grit/blink_resources.h"
 #include "content/app/resources/grit/content_resources.h"
 #include "content/app/strings/grit/content_strings.h"
 #include "content/child/child_thread.h"
 #include "content/child/content_child_helpers.h"
 #include "content/child/fling_curve_configuration.h"
 #include "content/child/web_discardable_memory_impl.h"
 #include "content/child/web_socket_stream_handle_impl.h"
 #include "content/child/web_url_loader_impl.h"
@@ skipping 449 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(
@@ skipping 696 matching lines @@
 }
 
 // static
 void BlinkPlatformImpl::DestroyCurrentThread(void* thread) {
   WebThreadImplForMessageLoop* impl =
       static_cast<WebThreadImplForMessageLoop*>(thread);
   delete impl;
 }
 
 }  // namespace content