Merge changes Ie13868e5,Ie2c1e0ca,Ib91037bf,Ibf204b14,I0b1079c4, ...
* changes:
Replace a DCHECK with a parse failure in connection ID parsing
Move drop_response_body from QuicClient to QuicSpdyClientBase to share with chromium
Extract the FakeProofVerifier from quic_client_bin.cc to facilitate sharing with Chromium.
Add QuicFramer Probe methods
Remove .impl() method from QuicSocketAddress and QuicIpAddress.
Change QuartcClientEndpoint to handle client-side version negotiation.
In quic_client_bin.cc, print the "Request (succeeded|failed)" messages in stdout instead of stderr.
Have separate uni- and bi-directional stream limits for IETF QUIC
Fix a use-after-free in quic_client.
