mac: Fix bug where exiting tab fullscreen would cause Chrome menubar to disappear.

chrome/browser/ui/fullscreen/fullscreen_controller_state_unittest.cc

Index: chrome/browser/ui/fullscreen/fullscreen_controller_state_unittest.cc
diff --git a/chrome/browser/ui/fullscreen/fullscreen_controller_state_unittest.cc b/chrome/browser/ui/fullscreen/fullscreen_controller_state_unittest.cc
index d008e591eed3c19c48232511180f3a53b9dba2f3..971ab6ff3725f047e43da38c7775c05ed2bc2849 100644
--- a/chrome/browser/ui/fullscreen/fullscreen_controller_state_unittest.cc
+++ b/chrome/browser/ui/fullscreen/fullscreen_controller_state_unittest.cc
@@ -50,6 +50,7 @@ class FullscreenControllerTestWindow : public TestBrowserWindow {
 #endif
 #if defined(OS_MACOSX)
   virtual void EnterFullscreenWithChrome() override;
+  virtual void EnterFullscreenWithoutChrome() override;
   virtual bool IsFullscreenWithChrome() override;
   virtual bool IsFullscreenWithoutChrome() override;
 #endif
@@ -127,6 +128,10 @@ void FullscreenControllerTestWindow::EnterFullscreenWithChrome() {
   EnterFullscreen(true);
 }
 
+void FullscreenControllerTestWindow::EnterFullscreenWithoutChrome() {
+  EnterFullscreen(false);
+}
+
 bool FullscreenControllerTestWindow::IsFullscreenWithChrome() {
   return IsFullscreen() && mac_with_chrome_mode_;
 }