[NoStatePrefetch] Do not send responses to renderer in prefetch mode.

third_party/WebKit/Source/web/WebDocument.cpp

Index: third_party/WebKit/Source/web/WebDocument.cpp
diff --git a/third_party/WebKit/Source/web/WebDocument.cpp b/third_party/WebKit/Source/web/WebDocument.cpp
index 7184c1cc8ce7d2ec8e109ef6686a643ccc26720b..8607d48533907c4d658bd9eafff4cdbe661f7542 100644
--- a/third_party/WebKit/Source/web/WebDocument.cpp
+++ b/third_party/WebKit/Source/web/WebDocument.cpp
@@ -137,6 +137,11 @@ bool WebDocument::isPluginDocument() const
     return constUnwrap<Document>()->isPluginDocument();
 }
 
+bool WebDocument::isPrefetchOnly() const
+{
+    return constUnwrap<Document>()->isPrefetchOnly();
+}
+
 WebURL WebDocument::baseURL() const
 {
     return constUnwrap<Document>()->baseURL();