Add a basic benchmark for creating DOM.

Add a basic benchmark for creating DOM.

R=ojan@chromium.org, abarth@chromium.org

Committed: https://chromium.googlesource.com/external/mojo/+/7362bd7be3410f54beb3df49c17e12278a70a83a

[ojan, 2014-11-11 01:41:36]

ojan@chromium.org changed reviewers:
+ ojan@chromium.org

[ojan, 2014-11-11 01:41:37]

lgtm

https://codereview.chromium.org/713973003/diff/1/sky/benchmarks/dom/creation.sky
File sky/benchmarks/dom/creation.sky (right):

https://codereview.chromium.org/713973003/diff/1/sky/benchmarks/dom/creation....
sky/benchmarks/dom/creation.sky:4: var sky = document.documentElement;
document.querySelector('sky') ?

We're going to be removing documentElement at some point. May as well have one
fewer place to update.

https://codereview.chromium.org/713973003/diff/1/sky/benchmarks/dom/creation....
sky/benchmarks/dom/creation.sky:21: this.wasAttached = true;
indentation

https://codereview.chromium.org/713973003/diff/1/sky/benchmarks/dom/creation....
sky/benchmarks/dom/creation.sky:25: this.wasDetached = true;
ditto

https://codereview.chromium.org/713973003/diff/1/sky/benchmarks/dom/creation....
sky/benchmarks/dom/creation.sky:85: // console.log("widgets: " + widgets);
Did you mean to include these?

[esprehn, 2014-11-11 01:44:52]

https://codereview.chromium.org/713973003/diff/1/sky/benchmarks/dom/creation.sky
File sky/benchmarks/dom/creation.sky (right):

https://codereview.chromium.org/713973003/diff/1/sky/benchmarks/dom/creation....
sky/benchmarks/dom/creation.sky:4: var sky = document.documentElement;
On 2014/11/11 at 01:41:37, ojan wrote:
> document.querySelector('sky') ?
> 
> We're going to be removing documentElement at some point. May as well have one
fewer place to update.

We're going to remove querySelector also, so all these places will need
updating.

https://codereview.chromium.org/713973003/diff/1/sky/benchmarks/dom/creation....
sky/benchmarks/dom/creation.sky:85: // console.log("widgets: " + widgets);
On 2014/11/11 at 01:41:37, ojan wrote:
> Did you mean to include these?

Yes, that way you can see how much DOM is actually created and if you update the
constants you can see how much you added/removed from the benchmark.

[esprehn, 2014-11-11 01:45:57]

Committed patchset #2 (id:20001) manually as
7362bd7be3410f54beb3df49c17e12278a70a83a (presubmit successful).