gpu: Generate mailboxes on client side

gpu/command_buffer/service/mailbox_manager.cc

 // Copyright (c) 2012 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 "gpu/command_buffer/service/mailbox_manager.h"
 
 #include <algorithm>
 
 #include "crypto/random.h"
 #include "gpu/command_buffer/service/texture_manager.h"
 
 namespace gpu {
 namespace gles2 {
 
 MailboxManager::MailboxManager()
     : mailbox_to_textures_(std::ptr_fun(&MailboxManager::TargetNameLess)) {
 }
 
 MailboxManager::~MailboxManager() {
   DCHECK(mailbox_to_textures_.empty());
   DCHECK(textures_to_mailboxes_.empty());
 }
 
-void MailboxManager::GenerateMailbox(Mailbox* mailbox) {
-  crypto::RandBytes(mailbox->name, sizeof(mailbox->name));
-}
-
 Texture* MailboxManager::ConsumeTexture(unsigned target,
                                         const Mailbox& mailbox) {
   MailboxToTextureMap::iterator it =
       mailbox_to_textures_.find(TargetName(target, mailbox));
   if (it == mailbox_to_textures_.end())
     return NULL;
 
   return it->second->first;
 }
 
@@ skipping 32 matching lines @@
       mailbox(mailbox) {
 }
 
 bool MailboxManager::TargetNameLess(const MailboxManager::TargetName& lhs,
                                     const MailboxManager::TargetName& rhs) {
   return memcmp(&lhs, &rhs, sizeof(lhs)) < 0;
 }
 
 }  // namespace gles2
 }  // namespace gpu