Update {virtual,override} to follow C++11 style in ppapi.

ppapi/proxy/truetype_font_resource.h

 // Copyright (c) 2013 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 PPAPI_PROXY_TRUETYPE_FONT_RESOURCE_H_
 #define PPAPI_PROXY_TRUETYPE_FONT_RESOURCE_H_
 
 #include <queue>
 #include <string>
 
@@ skipping 12 matching lines @@
 
 struct SerializedTrueTypeFontDesc;
 
 class PPAPI_PROXY_EXPORT TrueTypeFontResource
     : public PluginResource,
       public thunk::PPB_TrueTypeFont_API {
  public:
   TrueTypeFontResource(Connection connection,
                        PP_Instance instance,
                        const PP_TrueTypeFontDesc_Dev& desc);
-  virtual ~TrueTypeFontResource();
+  ~TrueTypeFontResource() override;
 
   // Resource implementation.
-  virtual thunk::PPB_TrueTypeFont_API* AsPPB_TrueTypeFont_API() override;
+  thunk::PPB_TrueTypeFont_API* AsPPB_TrueTypeFont_API() override;
 
   // PPB_TrueTypeFont_API implementation.
-  virtual int32_t Describe(
+  int32_t Describe(
       PP_TrueTypeFontDesc_Dev* desc,
       scoped_refptr<TrackedCallback> callback) override;
-  virtual int32_t GetTableTags(
+  int32_t GetTableTags(
       const PP_ArrayOutput& output,
       scoped_refptr<TrackedCallback> callback) override;
-  virtual int32_t GetTable(
+  int32_t GetTable(
       uint32_t table,
       int32_t offset,
       int32_t max_data_length,
       const PP_ArrayOutput& output,
       scoped_refptr<TrackedCallback> callback) override;
 
   // PluginResource implementation.
-  virtual void OnReplyReceived(const ResourceMessageReplyParams& params,
-                               const IPC::Message& msg) override;
+  void OnReplyReceived(const ResourceMessageReplyParams& params,
+                       const IPC::Message& msg) override;
 
  private:
   void OnPluginMsgCreateComplete(
       const ResourceMessageReplyParams& params,
       const ppapi::proxy::SerializedTrueTypeFontDesc& desc,
       int32_t result);
   void OnPluginMsgGetTableTagsComplete(
       scoped_refptr<TrackedCallback> callback,
       PP_ArrayOutput array_output,
       const ResourceMessageReplyParams& params,
@@ skipping 12 matching lines @@
   PP_TrueTypeFontDesc_Dev* describe_desc_;
   scoped_refptr<TrackedCallback> describe_callback_;
 
   DISALLOW_COPY_AND_ASSIGN(TrueTypeFontResource);
 };
 
 }  // namespace proxy
 }  // namespace ppapi
 
 #endif  // PPAPI_PROXY_TRUETYPE_FONT_RESOURCE_H_