Run gn format on all BUILD.gn files (gn version 306668)

Generated by running the following:
for x in `git ls-files | grep BUILD.gn`; do gn format --in-place $x; done

BUG=348474
R=viettrungluu@chromium.org

Review URL: https://codereview.chromium.org/773283006
diff --git a/mojo/BUILD.gn b/mojo/BUILD.gn
index 68aa297..9d0884b 100644
--- a/mojo/BUILD.gn
+++ b/mojo/BUILD.gn
@@ -33,33 +33,23 @@
   }
 
   if (is_android) {
-    deps += [
-      "//mojo/android",
-    ]
+    deps += [ "//mojo/android" ]
   }
 
   if (mojo_use_go) {
-    deps += [
-      "//mojo/go",
-    ]
+    deps += [ "//mojo/go" ]
   }
 
   if (mojo_use_dart) {
-    deps += [
-      "//mojo/dart",
-    ]
+    deps += [ "//mojo/dart" ]
   }
 
   if (is_linux) {
-    deps += [
-      "//mojo/python",
-    ]
+    deps += [ "//mojo/python" ]
   }
 
   if (!is_win) {
-    deps += [
-      "//mojo/shell:mojo_launcher",
-    ]
+    deps += [ "//mojo/shell:mojo_launcher" ]
   }
 }
 
@@ -89,9 +79,7 @@
   ]
 
   if (is_android) {
-    deps += [
-      "//mojo/edk/system:mojo_system_unittests_apk",
-    ]
+    deps += [ "//mojo/edk/system:mojo_system_unittests_apk" ]
   }
 
   if (use_aura) {
@@ -104,9 +92,7 @@
   }
 
   if (mojo_use_dart) {
-    deps += [
-      "//mojo/dart/embedder/test:dart_unittests",
-    ]
+    deps += [ "//mojo/dart/embedder/test:dart_unittests" ]
   }
 }