base: Remove unused code in the message-loop.

base/message_loop/message_loop.cc

Index: base/message_loop/message_loop.cc
diff --git a/base/message_loop/message_loop.cc b/base/message_loop/message_loop.cc
index 87a0b631735f26b4c01d7bfa601353319b8c2600..7cd22a876553817ee788c09cbfdd3c05a45c4695 100644
--- a/base/message_loop/message_loop.cc
+++ b/base/message_loop/message_loop.cc
@@ -695,12 +695,6 @@ void MessageLoop::ReleaseSoonInternal(
 //------------------------------------------------------------------------------
 // MessageLoopForUI
 
-#if defined(OS_WIN)
-void MessageLoopForUI::DidProcessMessage(const MSG& message) {
-  pump_win()->DidProcessMessage(message);
-}
-#endif  // defined(OS_WIN)
-
 #if defined(OS_ANDROID)
 void MessageLoopForUI::Start() {
   // No Histogram support for UI message loop as it is managed by Java side