Format all BUILD.gn with "gn format --in-place".

Patch generated by the following command line:
$ git ls-files "*.gn" "*.gni" | grep -v format_test_data | sed "s/^/gn format --in-place /"|sh

BUG=554928
R=dpranke@chromium.org,scottmg@chromium.org,brettw@chromium.org

Review URL: https://codereview.chromium.org/1497543003

Cr-Original-Commit-Position: refs/heads/master@{#363370}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 79adad4e7973e44df1ee34b4952c2bfade88ee01

tools/gn/example/BUILD.gn

diff --git a/tools/gn/example/BUILD.gn b/tools/gn/example/BUILD.gn
index 58af952..a18390e 100644
--- a/tools/gn/example/BUILD.gn
+++ b/tools/gn/example/BUILD.gn
@@ -8,8 +8,8 @@
   ]
 
   deps = [
-    ":hello_static",
     ":hello_shared",
+    ":hello_static",
   ]
 }