Consolidate SDK forwards in sdk_forward_declarations.h.

chrome/browser/ui/cocoa/browser_window_controller_browsertest.mm

Index: chrome/browser/ui/cocoa/browser_window_controller_browsertest.mm
diff --git a/chrome/browser/ui/cocoa/browser_window_controller_browsertest.mm b/chrome/browser/ui/cocoa/browser_window_controller_browsertest.mm
index e75d5dc60eca79c1d01769ec125c137c43fc5b18..7ba3a715ab30e44b9097d26f5aa78824e94d662a 100644
--- a/chrome/browser/ui/cocoa/browser_window_controller_browsertest.mm
+++ b/chrome/browser/ui/cocoa/browser_window_controller_browsertest.mm
@@ -5,6 +5,7 @@
 #import "chrome/browser/ui/cocoa/browser_window_controller.h"
 
 #import "base/mac/mac_util.h"
+#include "base/mac/sdk_forward_declarations.h"
 #include "base/run_loop.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/browser_process.h"
@@ -38,14 +39,6 @@
 
 namespace {
 
-#if !defined(MAC_OS_X_VERSION_10_7) || \
-    MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_7
-enum {
-  NSWindowDocumentVersionsButton = 6,
-  NSWindowFullScreenButton
-};
-#endif  // MAC_OS_X_VERSION_10_7
-
 void CreateProfileCallback(const base::Closure& quit_closure,
                            Profile* profile,
                            Profile::CreateStatus status) {