Add the "virtual" keyword on method overrides that are missing it.

webkit/glue/plugins/pepper_buffer.cc

 // Copyright (c) 2010 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 "webkit/glue/plugins/pepper_buffer.h"
 
 #include <algorithm>
 
 #include "base/logging.h"
 #include "base/scoped_ptr.h"
@@ skipping 63 matching lines @@
 }
 
 Buffer::~Buffer() {
 }
 
 // static
 const PPB_Buffer_Dev* Buffer::GetInterface() {
   return &ppb_buffer;
 }
 
+Buffer* Buffer::AsBuffer() { return this; }
+
 bool Buffer::Init(uint32_t size) {
   if (size == 0)
     return false;
   Unmap();
   size_ = size;
   return true;
 }
 
 void Buffer::Describe(uint32_t* size_in_bytes) const {
   *size_in_bytes = size_;
@@ skipping 14 matching lines @@
   mem_buffer_.reset();
 }
 
 void Buffer::Swap(Buffer* other) {
   swap(other->mem_buffer_, mem_buffer_);
   std::swap(other->size_, size_);
 }
 
 }  // namespace pepper