Add tracing for GL texture objects

ui/gl/trace_util.cc

+// Copyright (c) 2015 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 "ui/gl/trace_util.h"
+
+#include "base/format_macros.h"
+#include "base/strings/stringprintf.h"
+
+namespace gfx {
+
+base::trace_event::MemoryAllocatorDumpGuid GetGLTextureGUIDForTracing(
+    uint64_t tracing_process_id,
+    uint32_t texture_id) {
+  return base::trace_event::MemoryAllocatorDumpGuid(base::StringPrintf(
+      "gl-texture-x-process/%" PRIx64 "/%d", tracing_process_id, texture_id));
+}
+
+}  // namespace ui