Remove code that checks if MessagePumpForGpu was signaled.

base/message_loop/message_pump_win.cc

Index: base/message_loop/message_pump_win.cc
diff --git a/base/message_loop/message_pump_win.cc b/base/message_loop/message_pump_win.cc
index b9b2c8460c0640dfefb55294c13b936991e2c46d..d04827ebfb504b7db61f085d50ec07e646f52951 100644
--- a/base/message_loop/message_pump_win.cc
+++ b/base/message_loop/message_pump_win.cc
@@ -553,11 +553,6 @@ void MessagePumpForGpu::ScheduleDelayedWork(
   delayed_work_time_ = delayed_work_time;
 }
 
-bool MessagePumpForGpu::WasSignaled() {
-  // If |event_| was set this would reset it back to unset state.
-  return WaitForSingleObject(event_.Get(), 0) == WAIT_OBJECT_0;
-}
-
 //-----------------------------------------------------------------------------
 // MessagePumpForGpu private: