Reformat all gn files in /third_party/libphonenumber.

`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=kolos@chromium.org

Bug: 1041419
Change-Id: I9f15c46d6dd88dfb97ed26c5cfe233881d2c8643
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1997769
Auto-Submit: Nico Weber <thakis@chromium.org>
Reviewed-by: Maxim Kolosovskiy <kolos@chromium.org>
Commit-Queue: Nico Weber <thakis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#734126}

third_party/libphonenumber/BUILD.gn

@@ -69,9 +69,7 @@ static_library("libphonenumber_without_metadata") {
 
   public_configs = [ ":libphonenumber_config" ]
 
-  public_deps = [
-    ":proto",
-  ]
+  public_deps = [ ":proto" ]
   deps = [
     ":proto",
     "//third_party/icu",
@@ -88,9 +86,7 @@ static_library("libphonenumber") {
     #"dist/cpp/src/phonenumbers/metadata.cc",
   ]
 
-  public_deps = [
-    ":libphonenumber_without_metadata",
-  ]
+  public_deps = [ ":libphonenumber_without_metadata" ]
 }
 
 test("libphonenumber_unittests") {