Report HTTP/2 HEADERS frames as HEADERS, not SYN_STREAM.
Previously, Framer passed HTTP/2 HEADERS frames with priority as SYN_STREAM to the
visitor. This is not correct because (1) we could get headers opening a stream
with no priority set, (2) HTTP/2 does not have SYN_STREAM frames anyway.
This CL makes the Framer report HTTP/2 HEADERS as HEADERS, and pass priority along. SPDY/3 functionality is unchanged.
This CL includes server change
79116025 by mlavan (changes to spdy_framer* expect for Patch Set 3), and server change
79432157 by bnc (Patch Set 3).
BUG=345769
Review URL: https://codereview.chromium.org/
698323002
Cr-Commit-Position: refs/heads/master@{#303285}