Move cross-platform Page Info UI code to its own folder.

chrome/test/BUILD.gn

Index: chrome/test/BUILD.gn
diff --git a/chrome/test/BUILD.gn b/chrome/test/BUILD.gn
index ac9ed174ea0079719cd750bfc5c3216af574f48d..58e81dbca94bd59af997ec9325e84fe4615b9461 100644
--- a/chrome/test/BUILD.gn
+++ b/chrome/test/BUILD.gn
@@ -3367,6 +3367,7 @@ test("unit_tests") {
     "../browser/ui/chrome_select_file_policy_unittest.cc",
     "../browser/ui/find_bar/find_backend_unittest.cc",
     "../browser/ui/login/login_handler_unittest.cc",
+    "../browser/ui/page_info/website_settings_unittest.cc",
     "../browser/ui/passwords/manage_passwords_state_unittest.cc",
     "../browser/ui/passwords/manage_passwords_view_utils_unittest.cc",
     "../browser/ui/passwords/password_manager_presenter_unittest.cc",
@@ -3379,7 +3380,6 @@ test("unit_tests") {
     "../browser/ui/website_settings/mock_permission_prompt.h",
     "../browser/ui/website_settings/mock_permission_prompt_factory.cc",
     "../browser/ui/website_settings/mock_permission_prompt_factory.h",
-    "../browser/ui/website_settings/website_settings_unittest.cc",
     "../browser/ui/webui/browsing_history_handler_unittest.cc",
     "../browser/ui/webui/fileicon_source_unittest.cc",
     "../browser/ui/webui/local_state/local_state_ui_unittest.cc",
@@ -3673,6 +3673,7 @@ test("unit_tests") {
       "../browser/ui/global_error/global_error_service_unittest.cc",
       "../browser/ui/omnibox/clipboard_utils_unittest.cc",
       "../browser/ui/omnibox/omnibox_controller_unittest.cc",
+      "../browser/ui/page_info/permission_menu_model_unittest.cc",
       "../browser/ui/passwords/manage_passwords_bubble_model_unittest.cc",
       "../browser/ui/passwords/manage_passwords_view_utils_desktop_unittest.cc",
       "../browser/ui/passwords/password_dialog_controller_impl_unittest.cc",
@@ -3706,7 +3707,6 @@ test("unit_tests") {
       "../browser/ui/toolbar/toolbar_actions_bar_unittest.h",
       "../browser/ui/toolbar/toolbar_actions_model_unittest.cc",
       "../browser/ui/toolbar/toolbar_model_unittest.cc",
-      "../browser/ui/website_settings/permission_menu_model_unittest.cc",
       "../browser/ui/webui/help/version_updater_chromeos_unittest.cc",
       "../browser/ui/webui/md_downloads/downloads_list_tracker_unittest.cc",
       "../browser/ui/webui/md_downloads/md_downloads_dom_handler_unittest.cc",