[iOS] Fix SadTabTabHelper compilation.

Bug: 815085
Cq-Include-Trybots: master.tryserver.chromium.mac:ios-simulator-cronet;master.tryserver.chromium.mac:ios-simulator-full-configs
Change-Id: Ib54f0a0c92da1ac3cdff7ad9c510ed60e41075e2
Reviewed-on: https://chromium-review.googlesource.com/934941
Reviewed-by: Rohit Rao <rohitrao@chromium.org>
Cr-Commit-Position: refs/branch-heads/3325@{#568}
Cr-Branched-From: bc084a8b5afa3744a74927344e304c02ae54189f-refs/heads/master@{#530369}
diff --git a/ios/chrome/browser/web/BUILD.gn b/ios/chrome/browser/web/BUILD.gn
index 5bec74a..2b64f71 100644
--- a/ios/chrome/browser/web/BUILD.gn
+++ b/ios/chrome/browser/web/BUILD.gn
@@ -43,6 +43,7 @@
     "//ios/chrome/browser/ui",
     "//ios/chrome/browser/ui/commands:commands",
     "//ios/chrome/browser/ui/fullscreen",
+    "//ios/chrome/browser/ui/fullscreen:new_fullscreen",
     "//ios/chrome/browser/ui/util:util",
     "//ios/web",
     "//ui/base",