Add a use counter for async XHR.

Add a use counter for async XHR.

Add a use counter for asynchronous XMLHttpRequest.send call.

BUG=436770
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=189008

[yhirano, 2015-01-26 03:18:13]

yhirano@chromium.org changed reviewers:
+ tyoshino@chromium.org

[tyoshino (SeeGerritForStatus), 2015-01-27 05:07:42]

lgtm

https://codereview.chromium.org/876583002/diff/1/Source/core/xmlhttprequest/X...
File Source/core/xmlhttprequest/XMLHttpRequest.cpp (right):

https://codereview.chromium.org/876583002/diff/1/Source/core/xmlhttprequest/X...
Source/core/xmlhttprequest/XMLHttpRequest.cpp:1003:
UseCounter::count(&executionContext, UseCounter::XMLHttpRequestAsynchronous);
This counts sendForInspectorXHRReplay(), too. It's for DevTools. But maybe it's
ok as on that page there the XHR has already happened and was counted, so
sendForInspectorXHRReplay() would be no-op regarding UseCounter::count().

Also we already have one for sync XHR at L1015. Let's just align with it.

[yhirano, 2015-01-27 05:57:20]

yhirano@chromium.org changed reviewers:
+ kouhei@chromium.org

[yhirano, 2015-01-27 05:57:20]

+kouhei for OWNER review.

[kouhei (in TOK), 2015-01-27 06:51:38]

The CQ bit was checked by kouhei@chromium.org

[kouhei (in TOK), 2015-01-27 06:51:38]

lgtm

[commit-bot: I haz the power, 2015-01-27 06:52:06]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/876583002/1

[commit-bot: I haz the power, 2015-01-27 08:05:01]

Committed patchset #1 (id:1) as
https://src.chromium.org/viewvc/blink?view=rev&revision=189008