Reformat all gn files in /chrome/browser/ui/messages.

`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=twellington@chromium.org

Bug: 1041419
Change-Id: Ia86be4784c3abacf4e9f42a7a8b8cb0c15103c88
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1997919
Auto-Submit: Nico Weber <thakis@chromium.org>
Reviewed-by: Theresa  <twellington@chromium.org>
Commit-Queue: Theresa  <twellington@chromium.org>
Cr-Commit-Position: refs/heads/master@{#730572}

chrome/browser/ui/messages/android/BUILD.gn

@@ -36,9 +36,7 @@ java_library("junit") {
   # Skip platform checks since Robolectric depends on requires_android targets.
   bypass_platform_checks = true
   testonly = true
-  sources = [
-    "java/src/org/chromium/chrome/browser/ui/messages/snackbar/SnackbarCollectionUnitTest.java",
-  ]
+  sources = [ "java/src/org/chromium/chrome/browser/ui/messages/snackbar/SnackbarCollectionUnitTest.java" ]
   deps = [
     ":java",
     "//base:base_java_test_support",
@@ -49,9 +47,7 @@ java_library("junit") {
 
 android_library("javatests") {
   testonly = true
-  sources = [
-    "java/src/org/chromium/chrome/browser/ui/messages/snackbar/SnackbarTest.java",
-  ]
+  sources = [ "java/src/org/chromium/chrome/browser/ui/messages/snackbar/SnackbarTest.java" ]
   deps = [
     ":java",
     "//base:base_java",