Reformat all gn files in /ios/chrome/browser/ui/util.

`gn format` recently changed its formatting behavior
for deps, source, and a few other elements when they
are assigned (with =) single-element lists to be consistent
with the formatting of updates (with +=) with single-element.

Now that we've rolled in a GN binary with the change,
reformat all files so that people don't get presubmit
warnings due to this.

This CL was uploaded by git cl split.

R=marq@chromium.org

Bug: 1041419
Change-Id: Ia5c37b7458d97cc02b04c25a073c8027e37688f2
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1997699
Auto-Submit: Nico Weber <thakis@chromium.org>
Reviewed-by: Mark Cogan <marq@chromium.org>
Commit-Queue: Nico Weber <thakis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#732469}

ios/chrome/browser/ui/util/BUILD.gn

@@ -209,9 +209,7 @@ bundle_data("terms_resources") {
     "//components/resources/terms/terms_zh-CN.html",
     "//components/resources/terms/terms_zh-TW.html",
   ]
-  outputs = [
-    "{{bundle_resources_dir}}/{{source_file_part}}",
-  ]
+  outputs = [ "{{bundle_resources_dir}}/{{source_file_part}}" ]
 }
 
 source_set("test_support") {
@@ -257,9 +255,7 @@ source_set("eg_test_support+eg2") {
     "//build/config/ios:xctest_config",
   ]
   testonly = true
-  sources = [
-    "keyboard_observer_helper_app_interface.h",
-  ]
+  sources = [ "keyboard_observer_helper_app_interface.h" ]
   deps = [
     ":util",
     "//ios/testing/earl_grey:eg_test_support+eg2",