Reformat all gn files in /chrome/service.

`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=thestig@chromium.org

Bug: 1041419
Change-Id: I76602d0287c9a1567248542589da874cdb805306
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1998150
Auto-Submit: Nico Weber <thakis@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>
Commit-Queue: Nico Weber <thakis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#730907}

chrome/service/BUILD.gn

@@ -75,9 +75,7 @@ static_library("service") {
     "//third_party/webrtc_overrides:webrtc_component",
   ]
 
-  public_deps = [
-    "//chrome/common:service_process_mojom",
-  ]
+  public_deps = [ "//chrome/common:service_process_mojom" ]
 
   if (use_cups) {
     sources += [ "cloud_print/print_system_cups.cc" ]