Quiche deps update #2 for August 15, 2019

Roll src/net/third_party/quiche/src/ c152cc559..4abb566fb (11 commits)

https://quiche.googlesource.com/quiche.git/+log/c152cc559e6c..4abb566fbbc6

$ git log c152cc559..4abb566fb --date=short --no-merges --format='%ad %ae %s'
2019-08-14 vasilvv Improve logging for BandwidthSampler map size bug entry.
2019-08-14 bnc Call BlockingManager methods from QpackEncoder when decoder stream instructions arrive.
2019-08-14 bnc Refactor QpackEncoderTest.
2019-08-13 nharper gfe-relnote: Call QuicSession::OnCryptoHandshakeEvent in TLS handshake. Protected by quic_supports_tls_handshake.
2019-08-13 bnc Only send Header Acknowledgement from QpackDecoder if required insert count is not zero.
2019-08-13 quiche-dev gfe-relnote: Stop registering ephemeral QBONE streams in the blocked list. Not flag protected, no functional change other than to reduce memory pressure.
2019-08-13 wub Internal QUICHE change
2019-08-13 dschinazi Send correct version negotiation to prober
2019-08-13 fkastenholz Add convience functions to end_to_end test
2019-08-13 renjietang Removed unused UberQuicStreamIdManager methods.
2019-08-13 dschinazi Client-side workaround for probes receiving unexpected length prefixes

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

R=bnc@chromium.org

Change-Id: Ic2673a098e7ac038673ded4bcc9775a197751c8a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1756156Reviewed-by: Bence Béky <bnc@chromium.org>
Commit-Queue: Ian Swett <ianswett@chromium.org>
Cr-Commit-Position: refs/heads/master@{#687378}

DEPS

@@ -284,7 +284,7 @@ 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': 'c152cc559e6cf3f74fff27e9da5758fcbc07e95d',
+  'quiche_revision': '4abb566fbbc63df8fe7c1ac30b21632b9eb18d0c',
   # 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

@@ -394,3 +394,9 @@ QUIC_FLAG(bool,
 QUIC_FLAG(bool,
           FLAGS_quic_reloadable_flag_quic_no_stream_data_after_reset,
           false)
+
+// When true, QuicDispatcher::MaybeDispatchPacket will use
+// packet_info.use_length_prefix instead of an incorrect local computation.
+QUIC_FLAG(bool,
+          FLAGS_quic_reloadable_flag_quic_use_length_prefix_from_packet_info,
+          false)