Move the Mac Task Manager to the new backend code.

chrome/chrome_tests.gypi

Index: chrome/chrome_tests.gypi
diff --git a/chrome/chrome_tests.gypi b/chrome/chrome_tests.gypi
index d90622dee8807887f26a30bef00f2a595387c516..77b57f0bd005498f65ae71b41321938edecaea31 100644
--- a/chrome/chrome_tests.gypi
+++ b/chrome/chrome_tests.gypi
@@ -622,7 +622,6 @@
     # Tests corresponding to the files in chrome_browser_ui_cocoa_sources.
     # Built on Mac, except when mac_views_browser==1.
     'chrome_browser_tests_cocoa_sources': [
-      'browser/task_manager/legacy_task_manager_tester.cc',
       'browser/ui/cocoa/accelerators_cocoa_browsertest.mm',
       'browser/ui/cocoa/applescript/browsercrapplication+applescript_test.mm',
       'browser/ui/cocoa/applescript/window_applescript_test.mm',
@@ -646,6 +645,7 @@
       'browser/ui/cocoa/profiles/profile_signin_confirmation_view_controller_browsertest.mm',
       'browser/ui/cocoa/renderer_context_menu/render_view_context_menu_mac_browsertest.mm',
       'browser/ui/cocoa/ssl_client_certificate_selector_cocoa_browsertest.mm',
+      'browser/ui/cocoa/task_manager_mac_browsertest.mm',
       'browser/ui/cocoa/view_id_util_browsertest.mm',
       'browser/ui/cocoa/web_contents_modal_dialog_manager_views_mac_browsertest.mm',
       'browser/ui/cocoa/website_settings/permission_bubble_cocoa_browser_test.mm',
@@ -684,7 +684,6 @@
       # TODO(tapted): Move these to chrome_browser_tests_views_sources when the
       # the corresponding files are moved in chrome_browser_ui.gypi (i.e. out of
       # chrome_browser_ui_views_non_mac_sources). http://crbug.com/404979.
-      'browser/task_manager/task_manager_tester_nonmac.cc',
       'browser/ui/views/autofill/autofill_popup_base_view_browsertest.cc',
       'browser/ui/views/autofill/card_unmask_prompt_view_tester_views.cc',
       'browser/ui/views/autofill/card_unmask_prompt_view_tester_views.h',