Introduce ui.dll / libui.so for the component build.

ui/gfx/compositor/compositor.gyp

 # Copyright (c) 2011 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.
 
 {
   'target_defaults': {
     'sources/': [
       ['exclude', '_(gl|win)\\.(cc?)$'],
     ],
     'conditions': [
       ['os_posix == 1 and OS != "mac"', {
         'sources/': [['include', '_(gl)\\.(h|cc)$'],]
       }],
       ['OS == "win"', {
         'sources/': [['include', '_(win)\\.(h|cc)$'],]
       }],
     ],
   },
   'targets': [
     {
       'target_name': 'compositor',
       'type': 'static_library',
       'dependencies': [
         '<(DEPTH)/base/base.gyp:base',
         '<(DEPTH)/skia/skia.gyp:skia',
         '<(DEPTH)/ui/gfx/gl/gl.gyp:gl',
+        '<(DEPTH)/ui/ui.gyp:ui_base',
         '<(DEPTH)/ui/ui.gyp:ui_gfx',
       ],
       'sources': [
         'compositor.cc',
         'compositor.h',
         'compositor_gl.cc',
         'compositor_gl.h',
         'compositor_win.cc',
         'layer.cc',
         'layer.h',
@@ skipping 26 matching lines @@
         }],
         ['OS == "win" and views_compositor == 0', {
           'sources/': [
             ['exclude', '^compositor_win.cc'],
           ],
         }],
       ],
     },
   ],
 }