Reformat all gn files in /ios/web/public/test.

`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=eugenebut@chromium.org

Bug: 1041419
Change-Id: I0a0e14d9aa856ed807837915fbd99d38d465b255
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1998574
Auto-Submit: Nico Weber <thakis@chromium.org>
Reviewed-by: Eugene But <eugenebut@chromium.org>
Commit-Queue: Nico Weber <thakis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#731587}

ios/web/public/test/BUILD.gn

@@ -52,9 +52,7 @@ source_set("element_selector") {
     "element_selector.mm",
   ]
 
-  deps = [
-    "//base",
-  ]
+  deps = [ "//base" ]
 }
 
 source_set("util") {
@@ -76,9 +74,7 @@ source_set("util") {
 
   # TODO(crbug.com/922813): Remove this once internal targets depend directly
   # on ":element_selector".
-  public_deps = [
-    "//ios/web/public/test:element_selector",
-  ]
+  public_deps = [ "//ios/web/public/test:element_selector" ]
 
   sources = [
     "error_test_util.h",

ios/web/public/test/fakes/BUILD.gn

@@ -28,9 +28,7 @@ source_set("fakes") {
     "//ui/base",
   ]
 
-  public_deps = [
-    "//ios/web/public",
-  ]
+  public_deps = [ "//ios/web/public" ]
 
   sources = [
     "crw_fake_find_in_page_manager_delegate.h",