Replace uses of hash_map in //base

gpu/command_buffer/service/gl_utils.cc

 // Copyright (c) 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 "gpu/command_buffer/service/gl_utils.h"
 
+#include <unordered_set>
+
 #include "base/metrics/histogram.h"
 #include "gpu/command_buffer/common/capabilities.h"
 #include "gpu/command_buffer/service/feature_info.h"
 #include "ui/gl/gl_version_info.h"
 
 namespace gpu {
 namespace gles2 {
 
 namespace {
 const char* GetDebugSourceString(GLenum source) {
@@ skipping 269 matching lines @@
   glDebugMessageControl(GL_DONT_CARE, GL_DONT_CARE, GL_DEBUG_SEVERITY_LOW, 0,
                         nullptr, GL_FALSE);
   glDebugMessageControl(GL_DONT_CARE, GL_DONT_CARE,
                         GL_DEBUG_SEVERITY_NOTIFICATION, 0, nullptr, GL_FALSE);
 
   glDebugMessageCallback(&LogGLDebugMessage, nullptr);
 }
 
 }  // namespace gles2
 }  // namespace gpu