Add a configurable parse-depth limit when parsing JFV headers, and use it for Feature-Policy Header

third_party/WebKit/Source/platform/network/HTTPParsers.cpp

Index: third_party/WebKit/Source/platform/network/HTTPParsers.cpp
diff --git a/third_party/WebKit/Source/platform/network/HTTPParsers.cpp b/third_party/WebKit/Source/platform/network/HTTPParsers.cpp
index 40ddcec6454cad61f728109a9950747f3037bae8..bd5257dece6b4a7ce03560d17ba556f50cd38c51 100644
--- a/third_party/WebKit/Source/platform/network/HTTPParsers.cpp
+++ b/third_party/WebKit/Source/platform/network/HTTPParsers.cpp
@@ -899,12 +899,14 @@ bool parseMultipartHeadersFromBody(const char* bytes,
 }
 
 // See https://tools.ietf.org/html/draft-ietf-httpbis-jfv-01, Section 4.
-std::unique_ptr<JSONArray> parseJSONHeader(const String& header) {
+std::unique_ptr<JSONArray> parseJSONHeader(const String& header,
+                                           int maxParseDepth) {
   StringBuilder sb;
   sb.append("[");
   sb.append(header);
   sb.append("]");
-  std::unique_ptr<JSONValue> headerValue = parseJSON(sb.toString());
+  std::unique_ptr<JSONValue> headerValue =
+      parseJSON(sb.toString(), maxParseDepth);
   return JSONArray::from(std::move(headerValue));
 }