Fix bug in net::RequestPriority -> HTTP/2 dependency conversion.

chrome/browser/io_thread.h

Index: chrome/browser/io_thread.h
diff --git a/chrome/browser/io_thread.h b/chrome/browser/io_thread.h
index d21ce618c06973ebb2744fb3c549e972bc4ee315..6cb2e07c85ac3885c60c102c613c08d3f38b1664 100644
--- a/chrome/browser/io_thread.h
+++ b/chrome/browser/io_thread.h
@@ -215,6 +215,8 @@ class IOThread : public content::BrowserThreadDelegate {
 
     Optional<bool> enable_brotli;
 
+    Optional<bool> enable_priority_dependencies;
+
     Optional<bool> enable_quic;
     Optional<bool> disable_quic_on_timeout_with_open_streams;
     Optional<bool> enable_quic_for_proxies;
@@ -356,6 +358,9 @@ class IOThread : public content::BrowserThreadDelegate {
   void UpdateNegotiateDisableCnameLookup();
   void UpdateNegotiateEnablePort();
 
+  // Configure the use of priority dependencies in SPDY/HTTP2
+  void ConfigurePriorityDependencies();
+
   // Configures QUIC options based on the flags in |command_line| as
   // well as the QUIC field trial group.
   void ConfigureQuic(const base::CommandLine& command_line);