Add layer name into frame viewer

webkit/renderer/compositor_bindings/web_content_layer_impl.cc

Index: webkit/renderer/compositor_bindings/web_content_layer_impl.cc
diff --git a/webkit/renderer/compositor_bindings/web_content_layer_impl.cc b/webkit/renderer/compositor_bindings/web_content_layer_impl.cc
index eb92d982b5d876100935431c346687cbf5b090a0..fa508e7058808d44f26108583ae28136a170b9c5 100644
--- a/webkit/renderer/compositor_bindings/web_content_layer_impl.cc
+++ b/webkit/renderer/compositor_bindings/web_content_layer_impl.cc
@@ -66,6 +66,10 @@ void WebContentLayerImpl::PaintContents(SkCanvas* canvas,
   *opaque = web_opaque;
 }
 
+std::string WebContentLayerImpl::DebugName() {
+  return UTF16ToASCII(client_->debugName());
+}
+
 void WebContentLayerImpl::DidChangeLayerCanUseLCDText() {
   // It is important to make this comparison because the LCD text status
   // here can get out of sync with that in the layer.