Update from https://crrev.com/312398

ui/gl/gl_enums.cc

+// Copyright 2014 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 <sstream>
+#include <GLES2/gl2.h>
+
+#include "ui/gl/gl_enums.h"
+
+namespace gfx {
+
+std::string GLEnums::GetStringEnum(uint32 value) {
+  const EnumToString* entry = enum_to_string_table_;
+  const EnumToString* end = entry + enum_to_string_table_len_;
+  for (;entry < end; ++entry) {
+    if (value == entry->value) {
+      return entry->name;
+    }
+  }
+  std::stringstream ss;
+  ss.fill('0');
+  ss.width(value < 0x10000 ? 4 : 8);
+  ss << std::hex << value;
+  return "0x" + ss.str();
+}
+
+std::string GLEnums::GetStringError(uint32 value) {
+  if (value == GL_NONE)
+    return "GL_NONE";
+  return GetStringEnum(value);
+}
+
+std::string GLEnums::GetStringBool(uint32 value) {
+  return value ? "GL_TRUE" : "GL_FALSE";
+}
+
+#include "ui/gl/gl_enums_implementation_autogen.h"
+
+}  // namespace gfx
+