Adds support for headless chrome embedder mojo services

headless/lib/renderer/headless_content_renderer_client.cc

Index: headless/lib/renderer/headless_content_renderer_client.cc
diff --git a/headless/lib/renderer/headless_content_renderer_client.cc b/headless/lib/renderer/headless_content_renderer_client.cc
index 5347d6092228090a42332c32e4416f31e25080a8..82faf2165a57f6799686ea293dba8890c9eeca07 100644
--- a/headless/lib/renderer/headless_content_renderer_client.cc
+++ b/headless/lib/renderer/headless_content_renderer_client.cc
@@ -4,6 +4,9 @@
 
 #include "headless/lib/renderer/headless_content_renderer_client.h"
 
+#include "base/strings/utf_string_conversions.h"
+#include "content/public/renderer/render_frame.h"
+
 namespace headless {
 
 HeadlessContentRendererClient::HeadlessContentRendererClient() {}