Enables permission bubbles to remain visible during fulscreen on Mac.

chrome/browser/ui/cocoa/browser_window_controller_private.h

Index: chrome/browser/ui/cocoa/browser_window_controller_private.h
diff --git a/chrome/browser/ui/cocoa/browser_window_controller_private.h b/chrome/browser/ui/cocoa/browser_window_controller_private.h
index f0a4a3dd8fe5ec26a5872459ba641f26aa1c600f..e5de062a9c094a177ba07c5594109fd806b117e3 100644
--- a/chrome/browser/ui/cocoa/browser_window_controller_private.h
+++ b/chrome/browser/ui/cocoa/browser_window_controller_private.h
@@ -104,6 +104,11 @@
                           regularWindow:(NSWindow*)regularWindow
                        fullscreenWindow:(NSWindow*)fullscreenWindow;
 
+// Called when a permission bubble closes, and informs the presentation
+// controller that the dropdown can be hidden.  (The dropdown should never be
+// hidden while a permissions bubble is visible.)
+- (void)permissionBubbleWindowWillClose:(NSNotification*)notification;
+
 // Sets presentation mode, creating the PresentationModeController if needed and
 // forcing a relayout.  If |forceDropdown| is YES, this method will always
 // initially show the floating bar when entering presentation mode, even if the
@@ -133,6 +138,10 @@
 - (void)enableBarVisibilityUpdates;
 - (void)disableBarVisibilityUpdates;
 
+// If there are no visibility locks and bar visibity updates are enabled, hides
+// the bar with |animation| and |delay|.  Otherwise, does nothing.
+- (void)hideOverlayIfPossibleWithAnimation:(BOOL)animation delay:(BOOL)delay;
+
 // The opacity for the toolbar divider; 0 means that it shouldn't be shown.
 - (CGFloat)toolbarDividerOpacity;