[Mac] Remove bookmark bar NIB

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

Index: chrome/browser/ui/cocoa/bookmarks/bookmark_bar_toolbar_view.mm
diff --git a/chrome/browser/ui/cocoa/bookmarks/bookmark_bar_toolbar_view.mm b/chrome/browser/ui/cocoa/bookmarks/bookmark_bar_toolbar_view.mm
index 02fe283b63f7a5c2f896a4910e5478a7fd69a79f..56cc537141dfb3b092dc8b315ca850443588f82e 100644
--- a/chrome/browser/ui/cocoa/bookmarks/bookmark_bar_toolbar_view.mm
+++ b/chrome/browser/ui/cocoa/bookmarks/bookmark_bar_toolbar_view.mm
@@ -23,6 +23,10 @@
 
 @implementation BookmarkBarToolbarView
 
+- (void)setController:(id<BookmarkBarToolbarViewController>)controller {

[Elly Fong-Jones, 2017/03/07 16:21:54]

what is this used for?

[lgrey, 2017/03/07 22:07:32]

Added a comment in the header (allows the controller to nil itself. Also
actually sets the controller in the first place, but in that case I could have
just put it in the initializer so that's why it's a separate method.)

+  controller_ = controller;
+}
+
 - (BOOL)isOpaque {
   // -drawRect: calls -drawAsDetachedBubble: or -drawBackground:, both of which
   // fill the dirty rect with an opaque color.