Increase maximum size of the HPACK decoder dynamic table to 64 kB.

Increase maximum size of the HPACK decoder dynamic table to 64 kB.

* Send out SETTINGS_HEADER_TABLE_SIZE = 64 kB in the initial SETTINGS frame on
  each HTTP/2 connection.
* Immediately notify HpackDecoder about the change so that it allows the encoder
  to update the dynamic table size up to this limit.  It is safe to do so before
  receiving the SETTINGS ACK, because the new limit is larger than the default 4
  kB.  In fact, a server following RFC 7540 Section 6.5.3 word-by-word might
  already use the larger limit before sending an ACK.

BUG=642784
Committed: https://crrev.com/b3cafaaea4c3c0c1cf553d8ec9999f83a8c1c7f4
Review-Url: https://codereview.chromium.org/2300683002
Cr-Original-Commit-Position: refs/heads/master@{#415718}
Cr-Commit-Position: refs/heads/master@{#416284}
(cherry picked from commit b3cafaaea4c3c0c1cf553d8ec9999f83a8c1c7f4)

Committed: https://chromium.googlesource.com/chromium/src/+/13d05e85b2565345c84d071c83ede52eefa60c81

[Bence, 2016-09-13 13:46:52]

Description was changed from

==========
Increase maximum size of the HPACK decoder dynamic table to 64 kB.

* Send out SETTINGS_HEADER_TABLE_SIZE = 64 kB in the initial SETTINGS frame on
  each HTTP/2 connection.
* Immediately notify HpackDecoder about the change so that it allows the encoder
  to update the dynamic table size up to this limit.  It is safe to do so before
  receiving the SETTINGS ACK, because the new limit is larger than the default 4
  kB.  In fact, a server following RFC 7540 Section 6.5.3 word-by-word might
  already use the larger limit before sending an ACK.

BUG=642784

Committed: https://crrev.com/b3cafaaea4c3c0c1cf553d8ec9999f83a8c1c7f4
Review-Url: https://codereview.chromium.org/2300683002
Cr-Original-Commit-Position: refs/heads/master@{#415718}
Cr-Commit-Position: refs/heads/master@{#416284}
(cherry picked from commit b3cafaaea4c3c0c1cf553d8ec9999f83a8c1c7f4)
==========

to

==========
Increase maximum size of the HPACK decoder dynamic table to 64 kB.

* Send out SETTINGS_HEADER_TABLE_SIZE = 64 kB in the initial SETTINGS frame on
  each HTTP/2 connection.
* Immediately notify HpackDecoder about the change so that it allows the encoder
  to update the dynamic table size up to this limit.  It is safe to do so before
  receiving the SETTINGS ACK, because the new limit is larger than the default 4
  kB.  In fact, a server following RFC 7540 Section 6.5.3 word-by-word might
  already use the larger limit before sending an ACK.

BUG=642784

Committed: https://crrev.com/b3cafaaea4c3c0c1cf553d8ec9999f83a8c1c7f4
Review-Url: https://codereview.chromium.org/2300683002
Cr-Original-Commit-Position: refs/heads/master@{#415718}
Cr-Commit-Position: refs/heads/master@{#416284}
(cherry picked from commit b3cafaaea4c3c0c1cf553d8ec9999f83a8c1c7f4)

Committed:
https://chromium.googlesource.com/chromium/src/+/13d05e85b2565345c84d071c83ed...
==========

[Bence, 2016-09-13 13:46:54]

Committed patchset #1 (id:1) manually as
13d05e85b2565345c84d071c83ede52eefa60c81.