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

content/child/blink_platform_impl.h

 // 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.
 
 #ifndef CONTENT_CHILD_BLINK_PLATFORM_IMPL_H_
 #define CONTENT_CHILD_BLINK_PLATFORM_IMPL_H_
 
 #include "base/compiler_specific.h"
 #include "base/containers/scoped_ptr_hash_map.h"
 #include "base/threading/thread_local_storage.h"
@@ skipping 156 matching lines @@
   virtual blink::WebCrypto* crypto();
   virtual blink::WebGeofencingProvider* geofencingProvider();
   virtual blink::WebNotificationManager* notificationManager();
   virtual blink::WebPushProvider* pushProvider();
   virtual blink::WebServicePortProvider* createServicePortProvider(
       blink::WebServicePortProviderClient*);
   virtual blink::WebPermissionClient* permissionClient();
   virtual blink::WebSyncProvider* backgroundSyncProvider();
 
   virtual blink::WebString domCodeStringFromEnum(int dom_code);
-  virtual int domEnumFromCodeString(const blink::WebString& codeString);
+  virtual int domEnumFromCodeString(const blink::WebString& code_string);
+
+  virtual blink::WebString domKeyStringFromEnum(int dom_key);
+  virtual int domKeyEnumFromString(const blink::WebString& key_string);
 
  private:
   void InternalInit();
   void UpdateWebThreadTLS(blink::WebThread* thread);
 
   bool IsMainThread() const;
 
   scoped_refptr<base::SingleThreadTaskRunner> MainTaskRunnerForCurrentThread();
 
   scoped_refptr<base::SingleThreadTaskRunner> main_thread_task_runner_;
   WebThemeEngineImpl native_theme_engine_;
   WebFallbackThemeEngineImpl fallback_theme_engine_;
   base::ThreadLocalStorage::Slot current_thread_slot_;
   webcrypto::WebCryptoImpl web_crypto_;
   scoped_ptr<WebGeofencingProviderImpl> geofencing_provider_;
   base::ScopedPtrHashMap<blink::WebMemoryDumpProvider*,
                          scoped_ptr<WebMemoryDumpProviderAdapter>>
       memory_dump_providers_;
 
   scoped_refptr<ThreadSafeSender> thread_safe_sender_;
   scoped_refptr<NotificationDispatcher> notification_dispatcher_;
   scoped_refptr<PushDispatcher> push_dispatcher_;
   scoped_ptr<PermissionDispatcher> permission_client_;
   scoped_ptr<BackgroundSyncProvider> sync_provider_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_CHILD_BLINK_PLATFORM_IMPL_H_