Add _mac suffix for obj-c files.

browser/atom_application_mac.mm

@@ -0,0 +1,38 @@
+// Copyright (c) 2013 GitHub, Inc. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#import "browser/atom_application_mac.h"
+
+#include "base/auto_reset.h"
+#include "base/logging.h"
+#include "browser/window_list.h"
+
+@implementation AtomApplication
+
+- (BOOL)isHandlingSendEvent {
+  return handlingSendEvent_;
+}
+
+- (void)sendEvent:(NSEvent*)event {
+  base::AutoReset<BOOL> scoper(&handlingSendEvent_, YES);
+  [super sendEvent:event];
+}
+
+- (void)setHandlingSendEvent:(BOOL)handlingSendEvent {
+  handlingSendEvent_ = handlingSendEvent;
+}
+
++ (AtomApplication*)sharedApplication {
+  return (AtomApplication*)[super sharedApplication];
+}
+
+- (IBAction)closeAllWindows:(id)sender {
+  atom::WindowList* window_list = atom::WindowList::GetInstance();
+  if (window_list->size() == 0)
+    [self terminate:self];
+
+  window_list->CloseAllWindows();
+}
+
+@end