Initial support for HTTP/2 dependencies and weights

net/spdy/spdy_framer.h

Index: net/spdy/spdy_framer.h
diff --git a/net/spdy/spdy_framer.h b/net/spdy/spdy_framer.h
index dd657a59575bab010382fff967115a59a5e40d32..218423424fba612648742a4721f3d892e8ecaf40 100644
--- a/net/spdy/spdy_framer.h
+++ b/net/spdy/spdy_framer.h
@@ -559,6 +559,11 @@ class NET_EXPORT_PRIVATE SpdyFramer {
 
   SpdyPriority GetHighestPriority() const { return 0; }
 
+  // Interpolates SpdyPriority values into SPDY4/HTTP2 priority weights,
+  // and vice versa.
+  uint8 MapPriorityToWeight(SpdyPriority priority);
+  SpdyPriority MapWeightToPriority(uint8 weight);
+
   // Deliver the given control frame's compressed headers block to the visitor
   // in decompressed form, in chunks. Returns true if the visitor has
   // accepted all of the chunks.