Fix ASAN ODR violation in ppapi/proxy in component mode

ppapi/proxy/udp_socket_resource_constants.h

 // Copyright 2017 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 <stdint.h>
 
 #include "base/macros.h"
-#include "ppapi/proxy/ppapi_proxy_export.h"
 
 namespace ppapi {
 namespace proxy {
 
-class PPAPI_PROXY_EXPORT UDPSocketResourceConstants {
+class UDPSocketResourceConstants {
  public:
   // The maximum number of bytes that each
   // PpapiPluginMsg_PPBUDPSocket_PushRecvResult message is allowed to carry.
-  static const int32_t kMaxReadSize;
+  enum { kMaxReadSize = 128 * 1024 };
   // The maximum number of bytes that each PpapiHostMsg_PPBUDPSocket_SendTo
   // message is allowed to carry.
-  static const int32_t kMaxWriteSize;
+  enum { kMaxWriteSize = 128 * 1024 };
 
   // The maximum number that we allow for setting
   // PP_UDPSOCKET_OPTION_SEND_BUFFER_SIZE. This number is only for input
   // argument sanity check, it doesn't mean the browser guarantees to support
   // such a buffer size.
-  static const int32_t kMaxSendBufferSize;
+  enum { kMaxSendBufferSize = 1024 * kMaxWriteSize };
   // The maximum number that we allow for setting
   // PP_UDPSOCKET_OPTION_RECV_BUFFER_SIZE. This number is only for input
   // argument sanity check, it doesn't mean the browser guarantees to support
   // such a buffer size.
-  static const int32_t kMaxReceiveBufferSize;
+  enum { kMaxReceiveBufferSize = 1024 * kMaxReadSize };
 
   // The maximum number of received packets that we allow instances of this
   // class to buffer.
-  static const size_t kPluginReceiveBufferSlots;
+  enum { kPluginReceiveBufferSlots = 32u };
   // The maximum number of buffers that we allow instances of this class to be
   // sending before we block the plugin.
-  static const size_t kPluginSendBufferSlots;
+  enum { kPluginSendBufferSlots = 8u };
 
  private:
   DISALLOW_COPY_AND_ASSIGN(UDPSocketResourceConstants);
 };
 
 }  // namespace proxy
 }  // namespace ppapi