Make //chromeos/settings a component

This includes some deps cleanup of //chromeos.

For explicit DEPS extraction:
[email protected]

Bug: 918682
Change-Id: I551c9a78284e86aef229f7c12e9b8611d4514c07
Reviewed-on: https://chromium-review.googlesource.com/c/1405968
Commit-Queue: Steven Bennetts <[email protected]>
Reviewed-by: A Olsen <[email protected]>
Cr-Commit-Position: refs/heads/master@{#622052}
diff --git a/chrome/browser/extensions/BUILD.gn b/chrome/browser/extensions/BUILD.gn
index e0b76a9d..c6d09f3 100644
--- a/chrome/browser/extensions/BUILD.gn
+++ b/chrome/browser/extensions/BUILD.gn
@@ -966,6 +966,7 @@
       "//chromeos/services/machine_learning/public/cpp",
       "//chromeos/services/machine_learning/public/mojom",
       "//chromeos/services/media_perception/public/mojom",
+      "//chromeos/settings",
       "//chromeos/tpm",
       "//components/arc",
       "//components/constrained_window",