Extract files for implementing unit tests from ash_unittests.

ash/ash.gyp

Index: ash/ash.gyp
diff --git a/ash/ash.gyp b/ash/ash.gyp
index 14fc9a66454bfb4f502f786408b443a2480ee56a..f1fd0151e6dc1d8c56dbfc6747cd336dd660070f 100644
--- a/ash/ash.gyp
+++ b/ash/ash.gyp
@@ -437,6 +437,37 @@
       ],
     },
     {
+      'target_name': 'test_support_ash',
+      'type': 'static_library',
+      'dependencies': [
+        '../skia/skia.gyp:skia',
+        '../testing/gtest.gyp:gtest',
+        'ash',
+        'ash_resources',
+      ],
+      'sources': [
+        'test/ash_test_base.cc',
+        'test/ash_test_base.h',
+        'test/ash_unittests.cc',
+        'test/capture_tracking_view.cc',
+        'test/capture_tracking_view.h',
+        'test/cursor_manager_test_api.cc',
+        'test/cursor_manager_test_api.h',
+        'test/launcher_view_test_api.cc',
+        'test/launcher_view_test_api.h',
+        'test/test_activation_delegate.cc',
+        'test/test_activation_delegate.h',
+        'test/test_launcher_delegate.cc',
+        'test/test_launcher_delegate.h',
+        'test/test_shell_delegate.cc',
+        'test/test_shell_delegate.h',
+        'test/test_suite.cc',
+        'test/test_suite.h',
+        'test/test_suite_init.h',
+        'test/test_suite_init.mm',
+      ],
+    },
+    {
       'target_name': 'ash_unittests',
       'type': 'executable',
       'dependencies': [
@@ -463,6 +494,7 @@
         '../ui/views/views.gyp:test_support_views',
         'ash',
         'ash_resources',
+        'test_support_ash',
       ],
       'sources': [
         '../ui/views/test/test_views_delegate.cc',
@@ -504,25 +536,6 @@
         'shell/window_watcher_unittest.cc',
         'system/tray/system_tray_unittest.cc',
         'system/web_notification/web_notification_tray_unittest.cc',
-        'test/ash_test_base.cc',
-        'test/ash_test_base.h',
-        'test/ash_unittests.cc',
-        'test/capture_tracking_view.cc',
-        'test/capture_tracking_view.h',
-        'test/cursor_manager_test_api.cc',
-        'test/cursor_manager_test_api.h',
-        'test/launcher_view_test_api.cc',
-        'test/launcher_view_test_api.h',
-        'test/test_activation_delegate.cc',
-        'test/test_activation_delegate.h',
-        'test/test_launcher_delegate.cc',
-        'test/test_launcher_delegate.h',
-        'test/test_shell_delegate.cc',
-        'test/test_shell_delegate.h',
-        'test/test_suite.cc',
-        'test/test_suite.h',
-        'test/test_suite_init.h',
-        'test/test_suite_init.mm',
         'tooltips/tooltip_controller_unittest.cc',
         'wm/activation_controller_unittest.cc',
         'wm/base_layout_manager_unittest.cc',