Forward BrowserAccessibility accSelect() to AXPlatformNode.

ui/accessibility/platform/ax_platform_node_win.cc

Index: ui/accessibility/platform/ax_platform_node_win.cc
diff --git a/ui/accessibility/platform/ax_platform_node_win.cc b/ui/accessibility/platform/ax_platform_node_win.cc
index 6dcdc91e23134602f6be614e7d9fd9f4f6b9761c..801758492f9abd52d3847f6d55d64538c39d0ae5 100644
--- a/ui/accessibility/platform/ax_platform_node_win.cc
+++ b/ui/accessibility/platform/ax_platform_node_win.cc
@@ -538,8 +538,6 @@ STDMETHODIMP AXPlatformNodeWin::put_accValue(VARIANT var_id,
   return E_FAIL;
 }
 
-// IAccessible functions not supported.
-
 STDMETHODIMP AXPlatformNodeWin::get_accSelection(VARIANT* selected) {
   COM_OBJECT_VALIDATE_1_ARG(selected);
   if (selected)
@@ -549,7 +547,17 @@ STDMETHODIMP AXPlatformNodeWin::get_accSelection(VARIANT* selected) {
 
 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;
+    target->delegate_->AccessibilityPerformAction(action_data);
+    return S_OK;
+  }
+
+  return S_FALSE;
 }
 
 STDMETHODIMP AXPlatformNodeWin::get_accHelpTopic(