Add a simple browser UI (with url bar)

mandoline/ui/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("//third_party/mojo/src/mojo/public/mojo_application.gni")
 import("//third_party/mojo/src/mojo/public/tools/bindings/mojom.gni")
 
 group("browser") {
   deps = [
     "//mandoline/ui/browser:window_manager",
   ]
 }
 
 mojo_native_application("window_manager") {
   sources = [
     "browser.cc",
     "browser.h",
     "merged_service_provider.cc",
     "merged_service_provider.h",
     "navigator_host_impl.cc",
     "navigator_host_impl.h",
   ]
 
+  if (is_android) {

[sky, 2015/05/07 23:07:32]

nit: combine with if (!is_android) below?

+    sources += [
+      "android/android_ui.cc",
+      "android/android_ui.h",
+    ]
+  } else {
+    sources += [
+      "desktop/desktop_ui.cc",
+      "desktop/desktop_ui.h",
+    ]
+  }
+
   deps = [
     "//base",
     "//components/view_manager/public/cpp",
     "//components/window_manager:lib",
     "//mandoline/services/navigation/public/interfaces",
     "//mojo/application",
     "//mojo/common:common",
     "//mojo/converters/geometry",
+    "//skia",
     "//third_party/mojo/src/mojo/public/cpp/bindings",
     "//third_party/mojo/src/mojo/public/cpp/utility",
     "//third_party/mojo/src/mojo/public/interfaces/application",
     "//ui/gfx/geometry",
     "//ui/mojo/events:interfaces",
   ]
+
+  if (!is_android) {
+    deps += [ "//mandoline/ui/aura" ]
+  }
 }