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

mojo/go/BUILD.gn

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//build/go/rules.gni")
 
 if (is_android) {
-   group("go") {
-     deps = [
-       ":go_sample_app",
-     ]
+  group("go") {
+    deps = [
+      ":go_sample_app",
+    ]
   }
   go_shared_library("go_sample_app") {
     sources = [
       "sample_app/app.go",
     ]
     deps = [
       "//mojo/public/c/system:for_shared_library",
     ]
   }
 } else if (is_linux) {
   group("go") {
-      deps = [
-        ":system_test",
-      ]
+    deps = [
+      ":system_test",
+    ]
   }
   go_test_binary("system_test") {
     sources = [
       "tests/system_test.go",
     ]
     static_library_sources = [
       "c_embedder/c_embedder.cc",
       "c_embedder/c_embedder.h",
     ]
     deps = [
       "//mojo/edk/system",
     ]
-  }  
-}
+  }
+}