Reformat all gn files in /tools/generate_library_loader.

`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=spang@chromium.org

Bug: 1041419
Change-Id: I7aff38500eb0120a80bdc08dac3cde8608089e1d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1998720
Auto-Submit: Nico Weber <thakis@chromium.org>
Reviewed-by: Michael Spang <spang@chromium.org>
Commit-Queue: Michael Spang <spang@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#730840}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 412c7a7d8ac648276ec2d974c6ac0e82e4dd3a7e
diff --git a/generate_library_loader.gni b/generate_library_loader.gni
index 8d025a1..8d2061e 100644
--- a/generate_library_loader.gni
+++ b/generate_library_loader.gni
@@ -60,8 +60,6 @@
       output_cc,
       output_h,
     ]
-    public_deps = [
-      ":${target_name}_loader",
-    ]
+    public_deps = [ ":${target_name}_loader" ]
   }
 }