DevTools: NetworkPanel: detect iframe (parser) initiator.

Source/core/inspector/InspectorResourceAgent.cpp

Index: Source/core/inspector/InspectorResourceAgent.cpp
diff --git a/Source/core/inspector/InspectorResourceAgent.cpp b/Source/core/inspector/InspectorResourceAgent.cpp
index 288df606ad693e798debe7988d57b55920940eb7..297a8d7fd30966b76cb14583b567280d809f272f 100644
--- a/Source/core/inspector/InspectorResourceAgent.cpp
+++ b/Source/core/inspector/InspectorResourceAgent.cpp
@@ -44,6 +44,7 @@
 #include "core/fileapi/FileReaderLoader.h"
 #include "core/fileapi/FileReaderLoaderClient.h"
 #include "core/frame/LocalFrame.h"
+#include "core/html/HTMLFrameOwnerElement.h"
 #include "core/inspector/IdentifiersFactory.h"
 #include "core/inspector/InspectorOverlay.h"
 #include "core/inspector/InspectorPageAgent.h"
@@ -675,6 +676,8 @@ PassRefPtr<TypeBuilder::Network::Initiator> InspectorResourceAgent::buildInitiat
         return initiatorObject;
     }
 
+    while (document && !document->scriptableDocumentParser())
+        document = document->ownerElement() ? document->ownerElement()->ownerDocument() : nullptr;
     if (document && document->scriptableDocumentParser()) {
         RefPtr<TypeBuilder::Network::Initiator> initiatorObject = TypeBuilder::Network::Initiator::create()
             .setType(TypeBuilder::Network::Initiator::Type::Parser);