AppListController refactoring part 1: AppListShower implementation.

ui/app_list/app_list.gyp

Index: ui/app_list/app_list.gyp
diff --git a/ui/app_list/app_list.gyp b/ui/app_list/app_list.gyp
index e8d42112297c47d8205d911cd435db6dddd9f2e1..b43ef718f0ac43389ce209e96b617f201c4ee0e8 100644
--- a/ui/app_list/app_list.gyp
+++ b/ui/app_list/app_list.gyp
@@ -35,6 +35,9 @@
         # Note: sources list duplicated in GN build.
         'app_list_constants.cc',
         'app_list_constants.h',
+        'app_list_shower.h',
+        'app_list_shower_impl.cc',
+        'app_list_shower_impl.h',
         'app_list_export.h',
         'app_list_folder_item.cc',
         'app_list_folder_item.h',
@@ -44,6 +47,8 @@
         'app_list_item_list.h',
         'app_list_item_list_observer.h',
         'app_list_item_observer.h',
+        'app_list_shower_delegate.h',
+        'app_list_shower_delegate_factory.h',
         'app_list_menu.cc',
         'app_list_menu.h',
         'app_list_model.cc',
@@ -218,6 +223,19 @@
             ['exclude', 'cocoa/'],
           ],
         }],
+        ['use_ash==1', {
+          'dependencies': [
+            '../keyboard/keyboard.gyp:keyboard',
+          ],
+        }, {  # use_ash == 0
+          'sources!': [
+            'app_list_shower_impl.cc',
+            'app_list_shower_impl.h',
+            'app_list_shower.h',
+            'app_list_shower_delegate.h',
+            'app_list_shower_delegate_factory.h',
+          ],
+        }],
       ],
       # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
       'msvs_disabled_warnings': [ 4267, ],
@@ -234,6 +252,8 @@
       ],
       'sources': [
         # Note: sources list duplicated in GN build.
+        'test/app_list_shower_impl_test_api.cc',
+        'test/app_list_shower_impl_test_api.h',
         'test/app_list_test_model.cc',
         'test/app_list_test_model.h',
         'test/app_list_test_view_delegate.cc',
@@ -317,6 +337,9 @@
             ['exclude', 'cocoa/'],
           ],
         }],
+        ['use_ash==1', {
+          'sources': [ "app_list_shower_impl_unittest.cc", ],
+        }],
       ],
       # Disable c4267 warnings until we fix size_t to int truncations.
       'msvs_disabled_warnings': [ 4267, ],