Add FakeClipboard implementation for unit tests.

chrome/chrome_tests.gypi

 # Copyright 2013 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': {
     'chrome_browser_extensions_test_support_sources': [
       # A list of sources which is shared between different browser tests.
       'browser/apps/app_browsertest_util.cc',
       'browser/apps/app_browsertest_util.h',
       'browser/extensions/browsertest_util.cc',
@@ skipping 817 matching lines @@
       'test/remoting/waiter.cc',
       'test/remoting/waiter.h',
       'test/remoting/webapp_javascript_unittest.cc',
       # TODO(craig): Rename this and run from base_unittests when the test
       # is safe to run there. See http://crbug.com/78722 for details.
       '../base/files/file_path_watcher_browsertest.cc',
     ],
     'chrome_interactive_ui_test_sources': [
       '../chrome/browser/ui/webui/options/language_options_interactive_uitest.cc',
       '../extensions/browser/app_window/app_window_interactive_uitest.cc',
+      '../ui/base/clipboard/clipboard_android_unittest.cc',
       '../ui/base/clipboard/clipboard_unittest.cc',
       '../ui/views/controls/webview/webview_interactive_uitest.cc',
       '../ui/views/corewm/desktop_capture_controller_unittest.cc',
       '../ui/views/widget/desktop_aura/desktop_window_tree_host_x11_interactive_uitest.cc',
       '../ui/views/widget/desktop_aura/x11_topmost_window_finder_interactive_uitest.cc',
       '../ui/views/widget/widget_interactive_uitest.cc',
       'browser/apps/app_browsertest_util.cc',
       'browser/apps/app_browsertest_util.h',
       'browser/apps/app_pointer_lock_interactive_uitest.cc',
       'browser/apps/app_shim/app_shim_interactive_uitest_mac.mm',
@@ skipping 2398 matching lines @@
             ['enable_webrtc==1', {
               'dependencies': [
                 '../third_party/libjingle/libjingle.gyp:libjingle_webrtc'
               ]
             }],
           ],
         }]
     }],
   ],  # 'conditions'
 }