[Mac] Force invalidate bookmark bar layout on node change

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

Index: chrome/browser/ui/cocoa/bookmarks/bookmark_bar_controller.mm
diff --git a/chrome/browser/ui/cocoa/bookmarks/bookmark_bar_controller.mm b/chrome/browser/ui/cocoa/bookmarks/bookmark_bar_controller.mm
index 034750d5a6d87a5e1439ead99365a4422066988c..a0f22b0cc2c2ad943ec1742f13ae288e817db33e 100644
--- a/chrome/browser/ui/cocoa/bookmarks/bookmark_bar_controller.mm
+++ b/chrome/browser/ui/cocoa/bookmarks/bookmark_bar_controller.mm
@@ -2134,9 +2134,13 @@ static BOOL ValueInRangeInclusive(CGFloat low, CGFloat value, CGFloat high) {
   [self rebuildLayoutWithAnimated:NO];
 }
 
-// TODO(jrg): for now this is brute force.
 - (void)nodeChanged:(BookmarkModel*)model
                node:(const BookmarkNode*)node {
+  // Invalidate the layout if the changed node is visible. This ensures
+  // the button is updated if the button offsets don't change but the
+  // title does.
+  if (nodeIdToButtonMap_.find(node->id()) != nodeIdToButtonMap_.end())
+    layout_ = {};
   [self loaded:model];
 }