[KeyboardEvent] Add embedder APIs to translate between Dom |key| enum and strings

content/child/blink_platform_impl.cc

 // Copyright 2014 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 "content/child/blink_platform_impl.h"
 
 #include <math.h>
 
 #include <vector>
 
@@ skipping 1323 matching lines @@
 WebString BlinkPlatformImpl::domCodeStringFromEnum(int dom_code) {
   return WebString::fromUTF8(ui::KeycodeConverter::DomCodeToCodeString(
       static_cast<ui::DomCode>(dom_code)));
 }
 
 int BlinkPlatformImpl::domEnumFromCodeString(const WebString& code) {
   return static_cast<int>(ui::KeycodeConverter::CodeStringToDomCode(
       code.utf8().data()));
 }
 
+WebString BlinkPlatformImpl::domKeyStringFromEnum(int dom_key) {
+  return WebString::fromUTF8(ui::KeycodeConverter::DomKeyToKeyString(
+      static_cast<ui::DomKey>(dom_key)));
+}
+
+int BlinkPlatformImpl::domKeyEnumFromString(const WebString& key) {
+  return static_cast<int>(ui::KeycodeConverter::KeyStringToDomKey(
+      key.utf8().data()));
+}
+
 }  // namespace content