Revert of services/ui: Revert CLs that broke Windows.

services/ui/gles2/command_buffer_driver_manager.cc

-// Copyright 2016 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 "services/ui/gles2/command_buffer_driver_manager.h"
-
-#include <algorithm>
-
-#include "services/ui/gles2/command_buffer_driver.h"
-
-namespace ui {
-
-CommandBufferDriverManager::CommandBufferDriverManager() {}
-
-CommandBufferDriverManager::~CommandBufferDriverManager() {}
-
-void CommandBufferDriverManager::AddDriver(CommandBufferDriver* driver) {
-  DCHECK(CalledOnValidThread());
-  DCHECK(std::find(drivers_.begin(), drivers_.end(), driver) == drivers_.end());
-  drivers_.push_back(driver);
-}
-
-void CommandBufferDriverManager::RemoveDriver(CommandBufferDriver* driver) {
-  DCHECK(CalledOnValidThread());
-  auto it = std::find(drivers_.begin(), drivers_.end(), driver);
-  DCHECK(it != drivers_.end());
-  drivers_.erase(it);
-}
-
-uint32_t CommandBufferDriverManager::GetUnprocessedOrderNum() const {
-  DCHECK(CalledOnValidThread());
-  uint32_t unprocessed_order_num = 0;
-  for (auto* d : drivers_) {
-    unprocessed_order_num =
-      std::max(unprocessed_order_num, d->GetUnprocessedOrderNum());
-  }
-  return unprocessed_order_num;
-}
-
-uint32_t CommandBufferDriverManager::GetProcessedOrderNum() const {
-  DCHECK(CalledOnValidThread());
-  uint32_t processed_order_num = 0;
-  for (auto* d : drivers_) {
-    processed_order_num =
-        std::max(processed_order_num, d->GetProcessedOrderNum());
-  }
-  return processed_order_num;
-}
-
-}  // namespace ui