Switch ResourceBundle LoadDataResourceBytes to return RefCountedMemory.

headless/lib/headless_content_client.cc

Index: headless/lib/headless_content_client.cc
diff --git a/headless/lib/headless_content_client.cc b/headless/lib/headless_content_client.cc
index f6c96e5e8b9b5111ddc8fc4e277eddc519ae9d0f..94bfc7727ff1015c1d3dfe5a05f33b4f2f0d4a07 100644
--- a/headless/lib/headless_content_client.cc
+++ b/headless/lib/headless_content_client.cc
@@ -30,7 +30,7 @@ base::StringPiece HeadlessContentClient::GetDataResource(
       resource_id, scale_factor);
 }
 
-base::RefCountedStaticMemory* HeadlessContentClient::GetDataResourceBytes(
+base::RefCountedMemory* HeadlessContentClient::GetDataResourceBytes(
     int resource_id) const {
   return ResourceBundle::GetSharedInstance().LoadDataResourceBytes(resource_id);
 }