Use UNLIKELY() macro in generated bindings for minimum argument count checks

Use UNLIKELY() macro in generated bindings for minimum argument count checks

Use UNLIKELY() macro in generated bindings for minimum argument count checks
in as a speculative fix for a performance regression caused by making
arguments mandatory. It is very unlikely the functions are called without the
required number of arguments so we should minimize the impact of this check
on performance.

R=haraken
BUG=285069
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=157246

[haraken, 2013-09-04 18:21:03]

LGTM.

Let's land it and revert if we cannot observe any perf improvement.

[commit-bot: I haz the power, 2013-09-04 18:23:23]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/ch.dumez@sisa.samsung.com/23471005/1

[commit-bot: I haz the power, 2013-09-04 21:58:11]

Change committed as 157246