Roll src/net/third_party/quiche/src/ e223d0ec6..b93b64e6b (7 commits)

https://quiche.googlesource.com/quiche.git/+log/e223d0ec67ad..b93b64e6bec7

$ git log e223d0ec6..b93b64e6b --date=short --no-merges --format='%ad %ae %s'
2019-12-19 nharper Refactor GfeQuicCryptoServerStream so parent class owns handshaker
2019-12-19 dschinazi Add presubmit to disallow absl in /third_party/quic/
2019-12-19 quiche-dev Created and integrated QuicIntervalDeque class for index management. Improves code readability.
2019-12-19 bnc Remove QuicHeaderList::max_header_list_size().
2019-12-18 wub gfe-relnote: For QUIC BBRv2 flows, cut inflight_hi gradually when there is high loss from PROBE_UP. Protected by --gfe2_reloadable_flag_quic_bbr2_cut_inflight_hi_gradually.
2019-12-18 quiche-dev gfe-relnote: Migrate //gfe/test_tools/request_tools/clients/... from char* and size_t signatures to absl::string_view, a better and more modern representation of a view into a string buffer; changes the minimum number of tests to get successful compilation and runs
2019-12-18 dschinazi Make QuicSession own its perspective

Created with:
  roll-dep src/net/third_party/quiche/src src/third_party/quic_trace/src

Change-Id: Ia367ccae1f60b09686b9f2945b7b6e89d3abe793
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1978902
Auto-Submit: David Schinazi <dschinazi@chromium.org>
Commit-Queue: Zhongyi Shi <zhongyi@chromium.org>
Reviewed-by: Zhongyi Shi <zhongyi@chromium.org>
Reviewed-by: Ryan Hamilton <rch@chromium.org>
Cr-Commit-Position: refs/heads/master@{#727207}

DEPS

@@ -310,7 +310,7 @@ vars = {
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling feed
   # and whatever else without interference from each other.
-  'quiche_revision': 'e223d0ec67adeaf9680aa3abd71025aa6c33e9df',
+  'quiche_revision': 'b93b64e6bec758514db173f168b1adc00169c14b',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling ios_webkit
   # and whatever else without interference from each other.

net/quic/quic_flags_list.h

@@ -406,3 +406,11 @@ QUIC_FLAG(bool, FLAGS_quic_reloadable_flag_quic_sanitize_ack_delay, false)
 QUIC_FLAG(bool,
           FLAGS_quic_restart_flag_quic_allow_very_long_connection_ids,
           false)
+
+// If true, frames will be hold in an optimized wrapper data structure.
+QUIC_FLAG(bool, FLAGS_quic_reloadable_flag_quic_interval_deque, false)
+
+// If true, QUIC BBRv2 will cut inflight_hi gradually upon loss from PROBE_UP.
+QUIC_FLAG(bool,
+          FLAGS_quic_reloadable_flag_quic_bbr2_cut_inflight_hi_gradually,
+          false)