Implement a Menu Item to Hide the Toolbar in Fullscreen

chrome/browser/ui/cocoa/browser_window_controller.h

Index: chrome/browser/ui/cocoa/browser_window_controller.h
diff --git a/chrome/browser/ui/cocoa/browser_window_controller.h b/chrome/browser/ui/cocoa/browser_window_controller.h
index 3ba66c21e79a9acb238460549d094fe3d89130f5..d79d4f914b9a223168136a68b920736ff1d2b16c 100644
--- a/chrome/browser/ui/cocoa/browser_window_controller.h
+++ b/chrome/browser/ui/cocoa/browser_window_controller.h
@@ -158,6 +158,9 @@ class Command;
   // return nil.
   BOOL isUsingCustomAnimation_;
 
+  // True if the toolbar needs to be hidden in fullscreen.
+  BOOL shouldHideFullscreenToolbar_;
+
   // The size of the original (non-fullscreen) window.  This is saved just
   // before entering fullscreen mode and is only valid when |-isFullscreen|
   // returns YES.
@@ -524,6 +527,11 @@ class Command;
 - (void)updateFullscreenExitBubbleURL:(const GURL&)url
                            bubbleType:(ExclusiveAccessBubbleType)bubbleType;
 
+// Toggles and updates the toolbar's visibility in fullscreen mode. This
+// function toggles between the sliding styles: OMNIBOX_TABS_PRESENT and
+// OMNIBOX_TABS_HIDDEN.
+- (void)toggleFullscreenToolbar;
+
 // Returns YES if the browser window is in or entering any fullscreen mode.
 - (BOOL)isInAnyFullscreenMode;
 
@@ -550,6 +558,9 @@ class Command;
 // Mode.
 - (BOOL)inPresentationMode;
 
+// Whether if the toolbar should be hidden in fullscreen.
+- (BOOL)shouldHideFullscreenToolbar;
+
 // Resizes the fullscreen window to fit the screen it's currently on.  Called by
 // the PresentationModeController when there is a change in monitor placement or
 // resolution.