Add "Supports overlays" information to about:gpu.

content/browser/gpu/gpu_internals_ui.cc

Index: content/browser/gpu/gpu_internals_ui.cc
diff --git a/content/browser/gpu/gpu_internals_ui.cc b/content/browser/gpu/gpu_internals_ui.cc
index aefed362e78fa50f9eb65c2443ab51347a0a3478..10a95170def094c68ad117daac1ff50e10adbb27 100644
--- a/content/browser/gpu/gpu_internals_ui.cc
+++ b/content/browser/gpu/gpu_internals_ui.cc
@@ -132,6 +132,8 @@ base::DictionaryValue* GpuInfoAsDictionaryValue() {
       "Passthrough Command Decoder",
       new base::Value(gpu_info.passthrough_cmd_decoder)));
   basic_info->Append(NewDescriptionValuePair(
+      "Supports overlays", new base::Value(gpu_info.supports_overlays)));
+  basic_info->Append(NewDescriptionValuePair(
       "Sandboxed", new base::Value(gpu_info.sandboxed)));
   basic_info->Append(NewDescriptionValuePair(
       "GPU0", GPUDeviceToString(gpu_info.gpu)));