Mac. Fix bug where accessibility gives a stuck highlight on item 1 of bookmark folder menus. Just...

chrome/browser/ui/cocoa/bookmarks/bookmark_button.mm

Index: chrome/browser/ui/cocoa/bookmarks/bookmark_button.mm
===================================================================
--- chrome/browser/ui/cocoa/bookmarks/bookmark_button.mm	(revision 87395)
+++ chrome/browser/ui/cocoa/bookmarks/bookmark_button.mm	(working copy)
@@ -352,6 +352,11 @@
   return gDraggedButton;
 }
 
+- (BOOL)canBecomeKeyView {
+  // If button is an item in a folder menu, don't become key.
+  return ![[self cell] isFolderButtonCell];
+}
+
 // This only gets called after a click that wasn't a drag, and only on folders.
 - (void)secondaryMouseUpAction:(BOOL)wasInside {
   const NSTimeInterval kShortClickLength = 0.5;