Implement a Menu Item to Hide the Toolbar in Fullscreen

chrome/browser/ui/exclusive_access/exclusive_access_context.cc

Index: chrome/browser/ui/exclusive_access/exclusive_access_context.cc
diff --git a/chrome/browser/ui/exclusive_access/exclusive_access_context.cc b/chrome/browser/ui/exclusive_access/exclusive_access_context.cc
index f85582cd00ec2e54beee5336ca05b0edf41f1214..9d0f19bbbe78de20fe119f9a4c3597e1f20b02f0 100644
--- a/chrome/browser/ui/exclusive_access/exclusive_access_context.cc
+++ b/chrome/browser/ui/exclusive_access/exclusive_access_context.cc
@@ -6,11 +6,11 @@
 
 #include "base/logging.h"
 
-bool ExclusiveAccessContext::SupportsFullscreenWithToolbar() const {
-  return false;
+void ExclusiveAccessContext::UpdateFullscreenWithToolbar(bool with_toolbar) {
+  NOTIMPLEMENTED();
 }
 
-void ExclusiveAccessContext::UpdateFullscreenWithToolbar(bool with_toolbar) {
+void ExclusiveAccessContext::ToggleFullscreenToolbar() {
   NOTIMPLEMENTED();
 }