[PoC] Reformat all BUILD.gn and *.gni files with new gn.

content/browser/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/config/features.gni")
 import("//build/config/ui.gni")
 import("//content/browser/browser.gni")
 import("//media/media_options.gni")
 
 source_set("browser") {
@@ skipping 27 matching lines @@
     "//mojo/application/public/cpp:cpp_for_chromium",
     "//mojo/application/public/interfaces",
     "//mojo/common",
     "//mojo/package_manager",
     "//mojo/public/cpp/bindings",
     "//mojo/shell",
     "//net",
     "//net:extras",
     "//skia",
     "//sql",
+    "//third_party/WebKit/public:blink_headers",
     "//third_party/npapi",
     "//third_party/re2",
-    "//third_party/WebKit/public:blink_headers",
     "//third_party/zlib",
     "//third_party/zlib:zip",
     "//ui/accessibility",
     "//ui/accessibility:ax_gen",
     "//ui/base",
     "//ui/base/ime",
     "//ui/events",
     "//ui/events:gesture_detection",
     "//ui/gfx",
     "//ui/gfx/geometry",
@@ skipping 464 matching lines @@
 
   if (enable_webvr && is_android) {
     sources += [
       "vr/android/cardboard/cardboard_vr_device.cc",
       "vr/android/cardboard/cardboard_vr_device.h",
       "vr/android/cardboard/cardboard_vr_device_provider.cc",
       "vr/android/cardboard/cardboard_vr_device_provider.h",
     ]
   }
 }