Update GN build files for new prefs location.

Updates references from //base:prefs to //components/prefs/

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Review URL: https://codereview.chromium.org/1652573002

Cr-Commit-Position: refs/heads/master@{#372540}
diff --git a/chrome/browser/BUILD.gn b/chrome/browser/BUILD.gn
index bb999334..47f1ce02 100644
--- a/chrome/browser/BUILD.gn
+++ b/chrome/browser/BUILD.gn
@@ -1130,7 +1130,6 @@
     "//chrome/browser/ui:test_support",
   ]
   deps = [
-    "//base:prefs_test_support",
     "//chrome/app/theme:theme_resources",
     "//chrome/browser",
     "//chrome/common",
@@ -1139,6 +1138,7 @@
     "//components/invalidation/impl",
     "//components/invalidation/impl:test_support",
     "//components/password_manager/core/browser:test_support",
+    "//components/prefs:test_support",
     "//components/search_engines:test_support",
     "//components/syncable_prefs:test_support",
     "//components/user_prefs/tracked:user_prefs_tracked_test_support",