[iOS][Dark Mode] Set toolbar color for default navigation controller

Bug: 1000643
Change-Id: I20b4c750acda5b2050e0c85c5352b9fa473b76b7
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1783155Reviewed-by: Sergio Collazos <sczs@chromium.org>
Commit-Queue: Robbie Gibson <rkgibson@google.com>
Cr-Commit-Position: refs/heads/master@{#693303}

ios/chrome/browser/ui/bookmarks/bookmark_home_view_controller.mm

@@ -305,7 +305,6 @@ std::vector<GURL> GetUrlsToOpen(const std::vector<const BookmarkNode*>& nodes) {
 
   // Set Navigation Bar, Toolbar and TableView appearance.
   self.navigationController.navigationBarHidden = NO;
-  self.navigationController.toolbar.translucent = YES;
   // Add a tableFooterView in order to disable separators at the bottom of the
   // tableView.
   self.tableView.tableFooterView = [[UIView alloc] init];

ios/chrome/browser/ui/table_view/table_view_navigation_controller.mm

@@ -37,6 +37,7 @@
   self.navigationBar.prefersLargeTitles = YES;
 
   self.toolbar.translucent = NO;
+  self.toolbar.barTintColor = UIColor.cr_systemBackgroundColor;
 }
 
 @end