Reformat all gn files in /android_webview/support_library/boundary_in…

…terfaces/BUILD.gn.

`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=ntfschr@chromium.org

Bug: 1041419
Change-Id: I3bb00579834d9c286c4030828fce5ff3a28d4987
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1998154
Auto-Submit: Nico Weber <thakis@chromium.org>
Reviewed-by: Nate Fischer <ntfschr@chromium.org>
Commit-Queue: Nico Weber <thakis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#731402}

android_webview/support_library/boundary_interfaces/BUILD.gn

@@ -41,9 +41,7 @@ android_library("boundary_interface_java") {
   # build when we mirror this into AndroidX. We are only permitted to depend on
   # core Android classes and other AndroidX classes (must be in the androidx.*
   # package name).
-  deps = [
-    "//third_party/android_deps:androidx_annotation_annotation_java",
-  ]
+  deps = [ "//third_party/android_deps:androidx_annotation_annotation_java" ]
 
   # This is to verify the boundary interfaces compile and lint correctly against
   # the minSdkVersion of the webkit support library module. As the minSdkVersion