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

content/browser/accessibility/browser_accessibility_manager.cc

Index: content/browser/accessibility/browser_accessibility_manager.cc
diff --git a/content/browser/accessibility/browser_accessibility_manager.cc b/content/browser/accessibility/browser_accessibility_manager.cc
index 144d5c13dac47d18ad6a6b8c312bb0adfcc8e21b..75b0696ce3a2489f1e8feda1e1dc73bf0394b981 100644
--- a/content/browser/accessibility/browser_accessibility_manager.cc
+++ b/content/browser/accessibility/browser_accessibility_manager.cc
@@ -450,7 +450,8 @@ void BrowserAccessibilityManager::OnFindInPageResult(
 
 void BrowserAccessibilityManager::OnChildFrameHitTestResult(
     const gfx::Point& point,
-    int hit_obj_id) {
+    int hit_obj_id,
+    ui::AXEvent event_to_fire) {
   BrowserAccessibility* obj = GetFromID(hit_obj_id);
   if (!obj || !obj->HasIntAttribute(ui::AX_ATTR_CHILD_TREE_ID))
     return;
@@ -464,6 +465,7 @@ void BrowserAccessibilityManager::OnChildFrameHitTestResult(
   ui::AXActionData action_data;
   action_data.target_point = point;
   action_data.action = ui::AX_ACTION_HIT_TEST;
+  action_data.hit_test_event_to_fire = event_to_fire;
   return child_manager->delegate()->AccessibilityPerformAction(action_data);
 }
 
@@ -721,6 +723,7 @@ void BrowserAccessibilityManager::HitTest(const gfx::Point& point) {
   ui::AXActionData action_data;
   action_data.action = ui::AX_ACTION_HIT_TEST;
   action_data.target_point = point;
+  action_data.hit_test_event_to_fire = ui::AX_EVENT_HOVER;
   delegate_->AccessibilityPerformAction(action_data);
 }