Pass accessible location change messages to the automation API.

chrome/renderer/extensions/automation_internal_custom_bindings.cc

Index: chrome/renderer/extensions/automation_internal_custom_bindings.cc
diff --git a/chrome/renderer/extensions/automation_internal_custom_bindings.cc b/chrome/renderer/extensions/automation_internal_custom_bindings.cc
index 301e74d0258b6dea7baf89b6ad313f9487ace277..6fc8560df45170bede51497bc66601b52b015bcf 100644
--- a/chrome/renderer/extensions/automation_internal_custom_bindings.cc
+++ b/chrome/renderer/extensions/automation_internal_custom_bindings.cc
@@ -685,6 +685,8 @@ void AutomationInternalCustomBindings::OnMessageReceived(
     const IPC::Message& message) {
   IPC_BEGIN_MESSAGE_MAP(AutomationInternalCustomBindings, message)
     IPC_MESSAGE_HANDLER(ExtensionMsg_AccessibilityEvent, OnAccessibilityEvent)
+    IPC_MESSAGE_HANDLER(ExtensionMsg_AccessibilityLocationChange,
+                        OnAccessibilityLocationChange)
   IPC_END_MESSAGE_MAP()
 }
 
@@ -1126,6 +1128,21 @@ void AutomationInternalCustomBindings::OnAccessibilityEvent(
   context()->DispatchEvent("automationInternal.onAccessibilityEvent", args);
 }
 
+void AutomationInternalCustomBindings::OnAccessibilityLocationChange(
+    const ExtensionMsg_AccessibilityLocationChangeParams& params) {
+  int tree_id = params.tree_id;
+  auto iter = tree_id_to_tree_cache_map_.find(tree_id);
+  if (iter == tree_id_to_tree_cache_map_.end())
+    return;
+  TreeCache* cache = iter->second;
+  ui::AXNode* node = cache->tree.GetFromId(params.id);
+  if (!node)
+    return;
+  node->SetLocation(params.new_location.offset_container_id,
+                    params.new_location.bounds,
+                    params.new_location.transform.get());
+}
+
 void AutomationInternalCustomBindings::OnNodeDataWillChange(
     ui::AXTree* tree,
     const ui::AXNodeData& old_node_data,