Mac: fix fullscreen floating bar in popup windows.

chrome/browser/cocoa/fullscreen_controller.mm

Index: chrome/browser/cocoa/fullscreen_controller.mm
diff --git a/chrome/browser/cocoa/fullscreen_controller.mm b/chrome/browser/cocoa/fullscreen_controller.mm
index 3c67409ed910649edf965434399c19e8d86419c3..39e2cf554098285835d33041036e5b5118d58d16 100644
--- a/chrome/browser/cocoa/fullscreen_controller.mm
+++ b/chrome/browser/cocoa/fullscreen_controller.mm
@@ -21,8 +21,9 @@ const NSTimeInterval kDropdownShowDelay = 0.3;
 const NSTimeInterval kDropdownHideDelay = 0.2;
 
 // The amount by which the floating bar is offset downwards (to avoid the menu)
-// in fullscreen mode.
-const CGFloat kTabStripVerticalOffset = 14;
+// in fullscreen mode. (We can't use |-[NSMenu menuBarHeight]| since it returns
+// 0 when the menu bar is hidden.)
+const CGFloat kFloatingBarVerticalOffset = 22;
 
 }  // end namespace
 
@@ -210,8 +211,8 @@ const CGFloat kTabStripVerticalOffset = 14;
   [self hideActiveWindowUI];
 }
 
-- (CGFloat)tabStripVerticalOffset {
-  return [self isWindowOnPrimaryScreen] ? kTabStripVerticalOffset : 0;
+- (CGFloat)floatingBarVerticalOffset {
+  return [self isWindowOnPrimaryScreen] ? kFloatingBarVerticalOffset : 0;
 }
 
 - (void)overlayFrameChanged:(NSRect)frame {