Update from https://crrev.com/333737

testing/iossim/iossim.mm

Index: testing/iossim/iossim.mm
diff --git a/testing/iossim/iossim.mm b/testing/iossim/iossim.mm
index 2f2af8d239ec0e995a382bfb3485d0ee20b8bd4d..3910ba5d60435911f03d6f28d9aff61637d0a091 100644
--- a/testing/iossim/iossim.mm
+++ b/testing/iossim/iossim.mm
@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#import <Foundation/Foundation.h>
 #include <asl.h>
+#import <Foundation/Foundation.h>
 #include <libgen.h>
 #include <stdarg.h>
 #include <stdio.h>
@@ -28,15 +28,9 @@
 #import "DVTFoundation.h"
 #endif  // IOSSIM_USE_XCODE_6
 
-@protocol OS_dispatch_queue
-@end
-@protocol OS_dispatch_source
-@end
 // TODO(lliabraa): Once all builders are on Xcode 6 this ifdef can be removed
 // (crbug.com/385030).
 #if defined(IOSSIM_USE_XCODE_6)
-@protocol OS_xpc_object
-@end
 @protocol SimBridge;
 @class SimDeviceSet;
 @class SimDeviceType;