Forward BrowserAccessibility accSelect() to AXPlatformNode.

ui/accessibility/platform/ax_platform_node_win.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <atlbase.h>
 #include <atlcom.h>
 #include <limits.h>
 #include <oleacc.h>
 #include <stdint.h>
 
@@ skipping 520 matching lines @@
   COM_OBJECT_VALIDATE_VAR_ID_AND_GET_TARGET(var_id, target);
 
   AXActionData data;
   data.action = ui::AX_ACTION_SET_VALUE;
   data.value = new_value;
   if (target->delegate_->AccessibilityPerformAction(data))
     return S_OK;
   return E_FAIL;
 }
 
-// IAccessible functions not supported.
-
 STDMETHODIMP AXPlatformNodeWin::get_accSelection(VARIANT* selected) {
   COM_OBJECT_VALIDATE_1_ARG(selected);
   if (selected)
     selected->vt = VT_EMPTY;
   return E_NOTIMPL;
 }
 
 STDMETHODIMP AXPlatformNodeWin::accSelect(
     LONG flagsSelect, VARIANT var_id) {
-  return E_NOTIMPL;
+  AXPlatformNodeWin* target;
+  COM_OBJECT_VALIDATE_VAR_ID_AND_GET_TARGET(var_id, target);
+
+  if (flagsSelect & SELFLAG_TAKEFOCUS) {
+    ui::AXActionData action_data;
+    action_data.action = ui::AX_ACTION_FOCUS;
+    action_data.target_node_id = unique_id_;

[dmazzoni, 2017/05/30 15:24:04]

Wrong id - this should be GetData().id() - but actually it's not needed
either way since we're calling it on a specific object, so
BrowserAccessibilityManager sets the id before forwarding the
action to the renderer

...so delete it for now, but in general be careful about node id
vs unique id

The unique id is only for the browser process, the node id is
unique within a frame and used for communicating actions to
the render process

+    target->delegate_->AccessibilityPerformAction(action_data);
+    return S_OK;
+  }
+
+  return S_FALSE;
 }
 
 STDMETHODIMP AXPlatformNodeWin::get_accHelpTopic(
     BSTR* help_file, VARIANT var_id, LONG* topic_id) {
   AXPlatformNodeWin* target;
   COM_OBJECT_VALIDATE_VAR_ID_2_ARGS_AND_GET_TARGET(var_id, help_file, topic_id,
                                                    target);
   if (help_file) {
     *help_file = nullptr;
   }
@@ skipping 730 matching lines @@
 
   AXPlatformNodeBase* base =
       FromNativeViewAccessible(node->GetNativeViewAccessible());
   if (base && !IsDescendant(base))
     base = nullptr;
 
   return static_cast<AXPlatformNodeWin*>(base);
 }
 
 }  // namespace ui