Add chrome/browser/ui to the GN build.

components/BUILD.gn

Index: components/BUILD.gn
diff --git a/components/BUILD.gn b/components/BUILD.gn
index b2b0c5ece7122d3d36698d9b2f9168abaf36ac8a..98c448100844122846ca62dffb9925244447a953 100644
--- a/components/BUILD.gn
+++ b/components/BUILD.gn
@@ -14,6 +14,7 @@ group("all_components") {
     "//components/cloud_devices/common",
     "//components/dom_distiller/core",
     "//components/favicon_base",
+    "//components/feedback",
     "//components/json_schema",
     "//components/language_usage_metrics",
     "//components/metrics",
@@ -54,6 +55,7 @@ group("all_components") {
       "//components/autofill/content/renderer",  # Blocked on content/blink.
       "//components/cloud_devices/common",  # Should work, needs checking.
       "//components/dom_distiller/core",  # Blocked on content.
+      "//components/feedback",  # Blocked on content.
       "//components/json_schema",  # Should work, needs checking.
       "//components/keyed_service/content",  # Blocked on content.
       "//components/policy",  # Blocked on content (indirectly via autofill).