Removes a couple of conflicting files from build

ui/ui.gyp

 # Copyright (c) 2012 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.
 
 {
   'variables': {
     'chromium_code': 1,
   },
   'targets': [
     {
@@ skipping 574 matching lines @@
         ['OS=="android" and android_webview_build==0', {
           'dependencies': [
             'android/ui_android.gyp:ui_java',
           ],
         }],
         ['OS=="android" and use_aura==0', {
           'sources!': [
             'base/cursor/cursor_android.cc'
           ],
         }],
+        ['OS=="android" and use_aura==1', {
+          'sources!': [
+            'base/clipboard/clipboard_aura.cc'
+          ],
+        }],
         ['OS=="android" or OS=="ios"', {
           'sources!': [
             'base/device_form_factor_desktop.cc'
           ],
         }],
         ['OS=="linux"', {
           'libraries': [
             '-ldl',
           ],
         }],
@@ skipping 31 matching lines @@
            'variables': {
              'jni_gen_package': 'ui',
              'jni_generator_ptr_type': 'long',
            },
            'includes': [ '../build/jni_generator.gypi' ],
          },
        ],
     }],
   ],
 }