Add GN buildfiles for ui/compositor and snapshot.

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")
 
 source_set("browser") {
   # Only targets in the content tree can depend directly on this target.
@@ skipping 25 matching lines @@
     "//crypto",
     "//net",
     "//skia",
     "//sql",
     "//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",
+    "//ui/base",
     "//ui/events",
     "//ui/events:gesture_detection",
     "//ui/gfx",
     "//ui/gfx/geometry",
     "//ui/resources",
     # TODO(GYP)
     #"//ui/snapshot",
     #'../google_apis/google_apis.gyp:google_apis',
     #'browser/service_worker/service_worker_proto.gyp:database_proto',
     #'browser/speech/proto/speech_proto.gyp:speech_proto',
@@ skipping 313 matching lines @@
 #     'dependencies': [
 #       '../build/linux/system.gyp:dbus',
 #       '../dbus/dbus.gyp:dbus',
 #     ],
 #   }, {  # OS != "linux" or use_dbus==0
 #     'sources!': [
 #       'browser/geolocation/wifi_data_provider_linux.cc',
 #     ],
 #   }],
 }