Change ReliableQuicStream::OnStreamFrame to return void since the method

Change ReliableQuicStream::OnStreamFrame to return void since the method
already closes the connection when there are errors and callers are not
checking the return value

Make QuicStreamSequencer::OnStreamFrame return void instead of bool
since it is already closing the connect or resetting the stream when
there is an error.

Make two QUIC methods return void instead of bool.

Merge internal change: 71870242

R=rch@chromium.org

[Ryan Hamilton, 2014-07-29 19:16:56]

lgtm