[Extensions Toolbar] Refactor a few test classes

chrome/chrome_tests_unit.gypi

Index: chrome/chrome_tests_unit.gypi
diff --git a/chrome/chrome_tests_unit.gypi b/chrome/chrome_tests_unit.gypi
index fea0ad8011d3e9d7a5a17ab9ab21e985e7a3f542..d8e066bb287e6173595f966f22345e2596209dcc 100644
--- a/chrome/chrome_tests_unit.gypi
+++ b/chrome/chrome_tests_unit.gypi
@@ -416,7 +416,6 @@
       'browser/ui/cocoa/extensions/extension_install_view_controller_unittest.mm',
       'browser/ui/cocoa/extensions/extension_installed_bubble_controller_unittest.mm',
       'browser/ui/cocoa/extensions/media_galleries_dialog_cocoa_unittest.mm',
-      'browser/ui/cocoa/extensions/test_toolbar_actions_bar_helper_cocoa.mm',
       'browser/ui/cocoa/extensions/toolbar_actions_bar_bubble_mac_unittest.mm',
       'browser/ui/cocoa/find_bar/find_bar_bridge_unittest.mm',
       'browser/ui/cocoa/find_bar/find_bar_cocoa_controller_unittest.mm',
@@ -1371,7 +1370,6 @@
       'browser/ui/views/tabs/tab_strip_unittest.cc',
       'browser/ui/views/tabs/tab_unittest.cc',
       'browser/ui/views/toolbar/reload_button_unittest.cc',
-      'browser/ui/views/toolbar/test_toolbar_actions_bar_helper_views.cc',
       'browser/ui/views/toolbar/toolbar_action_view_unittest.cc',
       'browser/ui/views/translate/translate_bubble_view_unittest.cc',
       'browser/ui/views/validation_message_bubble_delegate_unittest.cc',
@@ -1513,7 +1511,6 @@
       'browser/ui/toolbar/recent_tabs_sub_menu_model_unittest.cc',
       'browser/ui/toolbar/test_toolbar_actions_bar_bubble_delegate.cc',
       'browser/ui/toolbar/test_toolbar_actions_bar_bubble_delegate.h',
-      'browser/ui/toolbar/test_toolbar_actions_bar_helper.h',
       'browser/ui/toolbar/test_toolbar_model.cc',
       'browser/ui/toolbar/test_toolbar_model.h',
       'browser/ui/toolbar/toolbar_actions_bar_unittest.cc',