Moved action verbs out of Blink.

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 356 matching lines @@
 
 STDMETHODIMP AXPlatformNodeWin::get_accChildCount(LONG* child_count) {
   COM_OBJECT_VALIDATE_1_ARG(child_count);
   *child_count = delegate_->GetChildCount();
   return S_OK;
 }
 
 STDMETHODIMP AXPlatformNodeWin::get_accDefaultAction(
     VARIANT var_id, BSTR* def_action) {
   COM_OBJECT_VALIDATE_VAR_ID_1_ARG(var_id, def_action);
-  return GetStringAttributeAsBstr(ui::AX_ATTR_ACTION, def_action);
+  int action;
+  if (!GetIntAttribute(AX_ATTR_ACTION, &action)) {
+    *def_action = nullptr;
+    return S_FALSE;
+  }
+
+  base::string16 action_verb =
+      ActionToString(static_cast<AXSupportedAction>(action));
+  if (action_verb.empty()) {
+    *def_action = nullptr;
+    return S_FALSE;
+  }
+
+  *def_action = SysAllocString(action_verb.c_str());
+  DCHECK(def_action);
+  return S_OK;
 }
 
 STDMETHODIMP AXPlatformNodeWin::get_accDescription(
     VARIANT var_id, BSTR* desc) {
   COM_OBJECT_VALIDATE_VAR_ID_1_ARG(var_id, desc);
   return GetStringAttributeAsBstr(ui::AX_ATTR_DESCRIPTION, desc);
 }
 
 STDMETHODIMP AXPlatformNodeWin::get_accFocus(VARIANT* focus_child) {
   COM_OBJECT_VALIDATE_1_ARG(focus_child);
@@ skipping 763 matching lines @@
     ui::TextBoundaryDirection direction) {
   HandleSpecialTextOffset(text, &start_offset);
   ui::TextBoundaryType boundary = IA2TextBoundaryToTextBoundary(ia2_boundary);
   std::vector<int32_t> line_breaks;
   return static_cast<LONG>(ui::FindAccessibleTextBoundary(
       text, line_breaks, boundary, start_offset, direction,
       AX_TEXT_AFFINITY_DOWNSTREAM));
 }
 
 }  // namespace ui