Added GL_CHROMIUM_trace_marker feature as well as gpu_toplevel markers.

content/browser/renderer_host/render_widget_host_view_android.cc

Index: content/browser/renderer_host/render_widget_host_view_android.cc
diff --git a/content/browser/renderer_host/render_widget_host_view_android.cc b/content/browser/renderer_host/render_widget_host_view_android.cc
index 3c6d3e0910be805f64a0c6d976aa4f424eb97732..eb6c6adc4e33f9d274d944d6e14830186410ecef 100644
--- a/content/browser/renderer_host/render_widget_host_view_android.cc
+++ b/content/browser/renderer_host/render_widget_host_view_android.cc
@@ -191,7 +191,8 @@ GLHelperHolder::CreateContext3D() {
           url, gpu_channel_host.get(), attrs, lose_context_when_out_of_memory,
           limits, nullptr));
   if (context->InitializeOnCurrentThread()) {
-    context->pushGroupMarkerEXT(
+    context->traceBeginCHROMIUM(
+        "gpu_toplevel",
         base::StringPrintf("CmdBufferImageTransportFactory-%p",
                            context.get()).c_str());
   } else {