Enable working tab-dragging tests on Linux

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.
 {
   'includes': [
     'js_unittest_vars.gypi',
   ],
   'targets': [
     {
       'target_name': 'interactive_ui_tests',
@@ skipping 165 matching lines @@
             'browser/ui/panels/docked_panel_browsertest.cc',
             'browser/ui/panels/panel_browsertest.cc',
             'browser/ui/panels/panel_drag_browsertest.cc',
             'browser/ui/panels/panel_resize_browsertest.cc',
             'browser/ui/panels/stacked_panel_browsertest.cc',
             'browser/ui/views/panels/panel_view_browsertest.cc',
           ],
         }],
         ['OS=="linux" and use_aura==1 and chromeos==0', {
           'sources!': [
-            # TODO(port): These tests fail because they don't have a Screen,
-            # but expect one.
-            # TODO(port): I have no idea about the crashes in here; there's
-            # nothing obviously wrong. It doesn't run on gtk today, either.
-            'browser/ui/views/tabs/tab_drag_controller_interactive_uitest.cc',
             # TODO(port): Everything here times out. Attempts have been made to
             # fix the individual failures, but each time I disable a test from
             # these suites, it seems like one or another starts timing out too.
             'browser/ui/omnibox/omnibox_view_browsertest.cc',
             'browser/extensions/api/tabs/tabs_interactive_test.cc',
             'browser/ui/views/keyboard_access_browsertest.cc',
           ],
         }],
         ['use_ash==1', {
           'sources': [
@@ skipping 2713 matching lines @@
             ['enable_webrtc==1', {
               'dependencies': [
                 '../third_party/libjingle/libjingle.gyp:libjingle_webrtc'
               ]
             }],
           ],
         }]
     }],
   ],  # 'conditions'
 }