Add a factory and defines for native Linux surfaces.

ui/ui_unittests.gypi

Index: ui/ui_unittests.gypi
diff --git a/ui/ui_unittests.gypi b/ui/ui_unittests.gypi
index 7b8887a695c0d03e9519f7b636a03ab7dec28d13..13c7ccb39dfda3c4f4eca623987a1a4596d33c92 100644
--- a/ui/ui_unittests.gypi
+++ b/ui/ui_unittests.gypi
@@ -134,6 +134,7 @@
         'base/gtk/gtk_im_context_util_unittest.cc',
         'base/gtk/menu_label_accelerator_util_unittest.cc',
         'base/keycodes/usb_keycode_map_unittest.cc',
+        'base/linux/touch_event_from_evdev_converter_unittest.cc',
         'base/models/list_model_unittest.cc',
         'base/models/list_selection_model_unittest.cc',
         'base/models/tree_node_model_unittest.cc',
@@ -220,6 +221,15 @@
             'base/x/events_x_unittest.cc',
           ],
         }],
+        ['use_messagepump_linux == 1', {
+          'sources!': [
+            'base/x/x11_util_unittest.cc',
+          ],
+         }, { # use_messagepump_linux == 0
+          'sources!': [
+            'base/linux/touch_event_from_evdev_converter_unittest.cc',
+          ],
+        }],
         ['OS != "mac" and OS != "ios"', {
           'sources': [
             'gfx/transform_unittest.cc',
@@ -294,6 +304,11 @@
             'gfx/screen_unittest.cc',
           ],
         }],
+        ['use_native_surface_linux==1', {
+          'sources!': [
+            'base/clipboard/clipboard_unittest.cc',
+          ],
+        }],
       ],
       'target_conditions': [
         ['OS == "ios"', {