WebWaitableEvent: implement new API with ResetPolicy and InitialState arguments

content/child/blink_platform_impl.cc

Index: content/child/blink_platform_impl.cc
diff --git a/content/child/blink_platform_impl.cc b/content/child/blink_platform_impl.cc
index e7a7be110b634835886a6c1dd799371179966b58..a5db5a489fc273a4a82c505556d3abe012ace282 100644
--- a/content/child/blink_platform_impl.cc
+++ b/content/child/blink_platform_impl.cc
@@ -90,9 +90,14 @@ namespace {
 
 class WebWaitableEventImpl : public blink::WebWaitableEvent {
  public:
-  WebWaitableEventImpl() : impl_(new base::WaitableEvent(false, false)) {}
+  WebWaitableEventImpl(ResetPolicy policy, InitialState state) {
+    bool manual_reset = policy == ResetPolicy::Manual;
+    bool initially_signaled = state == InitialState::Signaled;
+    impl_.reset(new base::WaitableEvent(manual_reset, initially_signaled));
+  }
   virtual ~WebWaitableEventImpl() {}
 
+  virtual void reset() { impl_->Reset(); }
   virtual void wait() { impl_->Wait(); }
   virtual void signal() { impl_->Signal(); }
 
@@ -539,8 +544,17 @@ void BlinkPlatformImpl::yieldCurrentThread() {
   base::PlatformThread::YieldCurrentThread();
 }
 
+// TODO(toyoshim): Remove no arguments version after the transition.
 blink::WebWaitableEvent* BlinkPlatformImpl::createWaitableEvent() {
-  return new WebWaitableEventImpl();
+  return new WebWaitableEventImpl(
+    blink::WebWaitableEvent::ResetPolicy::Auto,
+    blink::WebWaitableEvent::InitialState::NonSignaled);
+}
+
+blink::WebWaitableEvent* BlinkPlatformImpl::createWaitableEvent(
+    blink::WebWaitableEvent::ResetPolicy policy,
+    blink::WebWaitableEvent::InitialState state) {
+  return new WebWaitableEventImpl(policy, state);
 }
 
 blink::WebWaitableEvent* BlinkPlatformImpl::waitMultipleEvents(