Add performance.now() to the d8 shell.

Add performance.now() to the d8 shell.

TEST=mjsunit/d8-performance-now
R=hpayer@chromium.org

Committed: https://code.google.com/p/v8/source/detail?r=17366

Committed: https://code.google.com/p/v8/source/detail?r=17368

Committed: https://code.google.com/p/v8/source/detail?r=17375

[Benedikt Meurer, 2013-10-23 08:06:06]

Hey Hannes,
Here's window.performance.now() as requested. :-)
PTAL
-- Benedikt

[Hannes Payer (out of office), 2013-10-23 09:59:51]

https://codereview.chromium.org/32433010/diff/1/test/mjsunit/d8-performance-n...
File test/mjsunit/d8-performance-now.js (right):

https://codereview.chromium.org/32433010/diff/1/test/mjsunit/d8-performance-n...
test/mjsunit/d8-performance-now.js:29: // sense with d8.
Can we revive the old test/mjsunit/timer.js here to test performance now
granularity and monotonicity?

[Benedikt Meurer, 2013-10-24 09:00:49]

PTAL

https://codereview.chromium.org/32433010/diff/1/test/mjsunit/d8-performance-n...
File test/mjsunit/d8-performance-now.js (right):

https://codereview.chromium.org/32433010/diff/1/test/mjsunit/d8-performance-n...
test/mjsunit/d8-performance-now.js:29: // sense with d8.
On 2013/10/23 09:59:51, Hannes Payer wrote:
> Can we revive the old test/mjsunit/timer.js here to test performance now
> granularity and monotonicity?

Done.

[Hannes Payer (out of office), 2013-10-24 09:25:29]

LGTM

[Benedikt Meurer, 2013-10-24 09:27:24]

Committed patchset #2 manually as r17366 (presubmit successful).

[Benedikt Meurer, 2013-10-24 10:48:25]

Committed patchset #2 manually as r17368.

[Benedikt Meurer, 2013-10-24 12:25:48]

Committed patchset #2 manually as r17375 (presubmit successful).