Reformat all gn files in /chrome/services/util_win.

`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=noel@chromium.org

Bug: 1041419
Change-Id: I2883cf765a607ae18942b53fe2e51e8a20684dc9
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1997832
Auto-Submit: Nico Weber <thakis@chromium.org>
Reviewed-by: Noel Gordon <noel@chromium.org>
Commit-Queue: Noel Gordon <noel@chromium.org>
Cr-Commit-Position: refs/heads/master@{#731009}

chrome/services/util_win/BUILD.gn

@@ -29,9 +29,7 @@ source_set("lib") {
 
 source_set("unit_tests") {
   testonly = true
-  sources = [
-    "av_products_unittest.cc",
-  ]
+  sources = [ "av_products_unittest.cc" ]
 
   deps = [
     ":lib",

chrome/services/util_win/public/mojom/BUILD.gn

@@ -5,11 +5,7 @@
 import("//mojo/public/tools/bindings/mojom.gni")
 
 mojom("mojom") {
-  sources = [
-    "util_win.mojom",
-  ]
+  sources = [ "util_win.mojom" ]
 
-  public_deps = [
-    "//mojo/public/mojom/base",
-  ]
+  public_deps = [ "//mojo/public/mojom/base" ]
 }