Generalize the HIT_TEST accessibility action so that it can send any event.

chrome/browser/extensions/api/automation_internal/automation_internal_api.cc

Index: chrome/browser/extensions/api/automation_internal/automation_internal_api.cc
diff --git a/chrome/browser/extensions/api/automation_internal/automation_internal_api.cc b/chrome/browser/extensions/api/automation_internal/automation_internal_api.cc
index 108c09d772ae6a35b034acce3189def6b28366f6..2e40cb24bdd64e785517611f19b4b83f964ef7bc 100644
--- a/chrome/browser/extensions/api/automation_internal/automation_internal_api.cc
+++ b/chrome/browser/extensions/api/automation_internal/automation_internal_api.cc
@@ -349,6 +349,23 @@ AutomationInternalPerformActionFunction::ConvertToAXActionData(
                                       get_image_data_params.max_height);
       break;
     }
+    case api::automation_internal::ACTION_TYPE_HITTEST: {
+      api::automation_internal::HitTestParams hit_test_params;
+      EXTENSION_FUNCTION_VALIDATE(
+          api::automation_internal::HitTestParams::Populate(
+              params->opt_args.additional_properties, &hit_test_params));
+      action->action = ui::AX_ACTION_HIT_TEST;
+      action->target_point = gfx::Point(hit_test_params.x, hit_test_params.y);
+      for (int event_index = ui::AX_EVENT_NONE + 1;
+           event_index <= ui::AX_EVENT_LAST; ++event_index) {
+        ui::AXEvent event = static_cast<ui::AXEvent>(event_index);
+        if (ui::ToString(event) == hit_test_params.event_to_fire)

[David Tseng, 2017/03/22 15:40:28]

Pretty sure you can do ParseEvent here.

[dmazzoni, 2017/03/23 16:29:30]

Done.

+          action->hit_test_event_to_fire = event;
+      }
+      if (action->hit_test_event_to_fire == ui::AX_EVENT_NONE)
+        return RespondNow(NoArguments());
+      break;
+    }
     case api::automation_internal::ACTION_TYPE_MAKEVISIBLE:
       action->action = ui::AX_ACTION_SCROLL_TO_MAKE_VISIBLE;
       break;