Add tracing for GL texture objects

ui/gl/trace_util.cc

Index: ui/gl/trace_util.cc
diff --git a/ui/gl/trace_util.cc b/ui/gl/trace_util.cc
new file mode 100644
index 0000000000000000000000000000000000000000..8be2c8b6b1108a66f537c22092d5fb51aa295933
--- /dev/null
+++ b/ui/gl/trace_util.cc
@@ -0,0 +1,19 @@
+// 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