Tablet-like power button behavior on Convertible/Tablet ChromeOS devices

ash/BUILD.gn

Index: ash/BUILD.gn
diff --git a/ash/BUILD.gn b/ash/BUILD.gn
index ebd98b3efaad30f0b6a0b7bb5cbc2e0a25c27e0d..b5687631bf78e7eb53db8df9a7c30006f0bbb9cc 100644
--- a/ash/BUILD.gn
+++ b/ash/BUILD.gn
@@ -1332,6 +1332,7 @@ test("ash_unittests") {
     "wm/overview/window_selector_unittest.cc",
     "wm/panels/panel_layout_manager_unittest.cc",
     "wm/panels/panel_window_resizer_unittest.cc",
+    "wm/power_button_controller_unittest.cc",
     "wm/resize_shadow_and_cursor_unittest.cc",
     "wm/root_window_layout_manager_unittest.cc",
     "wm/screen_dimmer_unittest.cc",
@@ -1460,6 +1461,7 @@ test("ash_unittests") {
 
       # Talks to ChromeOS system services.
       "wm/lock_state_controller_unittest.cc",
+      "wm/power_button_controller_unittest.cc",
 
       # Maximize mode is only available on Chrome OS.
       "wm/maximize_mode/maximize_mode_controller_unittest.cc",