Generate ax enums from idl.

This cl lays the groundwork for sharing all ax enums between platfrom accessibility and extension accessibility.

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Review URL: https://codereview.chromium.org/143473003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@249993 0039d316-1c4b-4281-b951-d872f2087c98
Land Recent QUIC Changes.

Add a LOG(DFATAL) if the sequence number length is too small to fit the
least_unacked delta in a QUIC ack frame.

Merge internal change: 61228351
https://codereview.chromium.org/156233004/


Change the types of the arguments to two methods in
QuicReceivedPacketManager to be more specific.  No behavior changes.

Merge internal change: 61215502
https://codereview.chromium.org/157803006/


Add convenience version() method to QuicServerSessionTest.

Merge internal change: 61210235
https://codereview.chromium.org/158173002/


Add convenience version() method to QuicSessionTest.

Merge internal change: 61206589
https://codereview.chromium.org/158063003/


Fix bug in QuicSentPacketManager::ClearPreviousRetransmissions where
pending packets were abandoned instead of being kept unacked so they
could be detected to be lost.

Merge internal change: 61197933
https://codereview.chromium.org/158073007/


Add QUIC_VERSION_15 to add a revived_packets set to replace the
deprecated accumulated_number_of_lost_packets field.

FEC requires a way to communicate that the peer doesn't need a packet
retransmitted, without indicating it's been received to the send
algorithm.

Merge internal change: 61159374
https://codereview.chromium.org/157403006/


Rename previous_transmissions to all_transmission in the QUIC unacked
packet map.  Change all_transmission to include all transmissions of a
packet, even if there is only one, instead of becoming null.

Merge internal change: 61144526
https://codereview.chromium.org/158153002/


Use an alternative fix for OneShotVisitor of CryptoFramer that doesn't
require a done() method.

Detect an old-style Public Reset packet by checking for a sequence
number length of 6 in public flags. This requires updating the
expected error details messages in PublicResetPacket unit tests.

Merge internal change: 61152017
https://codereview.chromium.org/153993015/


Refactor QuicSentPacketManager::MarkPacketHandled to simplify
implementation in preparation for breaking out the unacked packet map.
Also fixes a minor bug in which a packet which has been marked for
retransmission would still be retransmitted if a previous transmission
was acked.

Merge internal change: 61139074
https://codereview.chromium.org/137923007/


Doing early validation of quic config, to change a potential
crash-during-serving to a crash-on-startup.

Changing a serving crash to a start-up crash.  Not flag protected

Merge internal change: 61136961
https://codereview.chromium.org/157383006/


Remove parity tracking in FEC groups as part of the migration to
QUIC_VERSION_15, which does not need it.

Merge internal change: 61136827
https://codereview.chromium.org/157913003/


Comment out flaky test expectation while the root cause is investigated.

Merge internal change: 61104556
https://codereview.chromium.org/135933005/


QUIC - clean up changes - fixed during merge with internal source code.

Merge internal change: 61045294
https://codereview.chromium.org/157403005/


Fix problems with absolute value function.

The standard library provides seven absolute value functions.  From C,
there is abs, labs, llabs, fabs, fabsf, and fabsl for the types int,
long, long long, double, float and long double.  Due to numeric
conversions, these functions can accept arguments of any numeric types,
silently converting between types.  C++ libraries has std::abs, which
provides overloads for all these types, making it a better choice.  The
following problems have been observed, along with their fixes:

1) The wrong sized absolute value was used.  Using abs for a long long
would cause a cast to int first, resulting in unexpected values outside
of the range (INT_MIN, INT_MAX).  Switch to using std::abs
2) Using the wrong type of absolute value function.  Passing a floating
point number to an integer absolute value will cause rounding of
values, especially important for values close to zero.  Switch to using
std::abs
3) Taking the absolute value of an unsigned value.  This usually has no
effect, but may have some effects from casting.  Fixed by removing the
absolute value function.
4) Attempting to find the absolute difference between two unsigned
values.  These were transformed from abs(a - b) to
(a > b ? a - b : b - a).  This ternary expression is usually stored in
another variable.
5) Accidentally capturing the conditional such as
abs(a - b < threshold).  Moving the parentheses over to fix.
6) Some static_casts were used to, such as from uint32 -> int64, to get
a signed value in the absolute value.
7) A few types were changed from unsigned to signed.

Merge internal change: 61013787
https://codereview.chromium.org/136123012/


Pass the whole QuicRstStreamFrame to OnStreamReset. Preparation for
dealing with byte_offset updates that arrive in the RST frame.

(minor) QUIC OnStreamReset now takes QuicRstStreamFrame as argument.

Merge internal change: 60995908
https://codereview.chromium.org/142373006/

R=rch@chromium.org

Review URL: https://codereview.chromium.org/157803007

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@249994 0039d316-1c4b-4281-b951-d872f2087c98
LKGR w/ DEPS up to revision 249994