Define HAS_FEATURE instead of __has_feature

base/message_loop/message_pump_mac.h

Index: base/message_loop/message_pump_mac.h
diff --git a/base/message_loop/message_pump_mac.h b/base/message_loop/message_pump_mac.h
index 14b8377b9086b922eacd82765e54d68ae2ef74fa..eec3d12cc5579ad11ad72acc9589d74e267f0bd6 100644
--- a/base/message_loop/message_pump_mac.h
+++ b/base/message_loop/message_pump_mac.h
@@ -35,6 +35,7 @@
 
 #include <CoreFoundation/CoreFoundation.h>
 
+#include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "base/message_loop/timer_slack.h"
@@ -72,11 +73,11 @@ class TimeTicks;
 // Objective-C TUs, it is a type alias for NSAutoreleasePool. In all cases, a
 // method that takes or returns an NSAutoreleasePool* can use
 // AutoreleasePoolType* instead.
-#if !defined(__OBJC__) || __has_feature(objc_arc)
+#if !defined(__OBJC__) || HAS_FEATURE(objc_arc)

[Nico, 2016/04/06 00:38:20]

on mac we only support clang, so not using the macro here is fine

 class AutoreleasePoolType;
-#else   // !defined(__OBJC__) || __has_feature(objc_arc)
+#else   // !defined(__OBJC__) || HAS_FEATURE(objc_arc)
 typedef NSAutoreleasePool AutoreleasePoolType;
-#endif  // !defined(__OBJC__) || __has_feature(objc_arc)
+#endif  // !defined(__OBJC__) || HAS_FEATURE(objc_arc)
 
 class MessagePumpCFRunLoopBase : public MessagePump {
   // Needs access to CreateAutoreleasePool.