Switch CPU profile start/stop markers to monotonic time.

Switch CPU profile start/stop markers to monotonic time.

LOG=N
BUG=363976
R=bmeurer@chromium.org, yurys@chromium.org

Committed: https://code.google.com/p/v8/source/detail?r=20866

[alph, 2014-04-18 12:34:46]

Folks, could you please take a look.

[yurys, 2014-04-18 12:43:29]

lgtm

https://codereview.chromium.org/243033002/diff/1/include/v8-profiler.h
File include/v8-profiler.h (right):

https://codereview.chromium.org/243033002/diff/1/include/v8-profiler.h#newcod...
include/v8-profiler.h:121: * Returns time when the profile recording was started
(in microseconds).
Please add a note about the time base.

[alph, 2014-04-18 13:19:58]

https://codereview.chromium.org/243033002/diff/1/include/v8-profiler.h
File include/v8-profiler.h (right):

https://codereview.chromium.org/243033002/diff/1/include/v8-profiler.h#newcod...
include/v8-profiler.h:121: * Returns time when the profile recording was started
(in microseconds).
On 2014/04/18 12:43:30, yurys wrote:
> Please add a note about the time base.

Done.

[Benedikt Meurer, 2014-04-19 10:11:45]

LGTM

[alph, 2014-04-19 12:03:56]

The CQ bit was checked by alph@chromium.org

[commit-bot: I haz the power, 2014-04-19 12:04:09]

CQ is trying da patch. Follow status at
https://v8-status.appspot.com/cq/alph@chromium.org/243033002/20001

[commit-bot: I haz the power, 2014-04-19 12:04:10]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2014-04-19 12:04:10]

No LGTM from a valid reviewer yet. Only full committers are accepted.
Even if an LGTM may have been provided, it was from a non-committer or
a lowly provisional committer, _not_ a full super star committer.
See http://www.chromium.org/getting-involved/become-a-committer
Note that this has nothing to do with OWNERS files.

[alph, 2014-04-19 14:33:26]

Committed patchset #2 manually as r20866 (presubmit successful).