DevTools: add Paint Profiler link to layer & event details views

DevTools: add Paint Profiler link to layer & event details views

- add a "Paint Profiler" link to layer details view when paint
    is selected;
- add a "Paint Profiler" link to Paint event details view;
- collapse Size & Position cells of Layer Details View into
    Size: W x H (at X,Y)
- do not show Paint Count if it's 0 (Paint Count is n/a in Timeline)
- do not force-switch to Paint Profiler tab in Timeline details
    if user explicitly selected other tab.

BUG=

Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=185452

[caseq, 2014-11-14 10:12:33]

caseq@chromium.org changed reviewers:
+ pfeldman@chromium.org

[caseq, 2014-11-14 10:12:34]

Layer Details View screenshot:
https://drive.google.com/file/d/0B_yi9xtujhXSNGQ0aW1IaURzM0k/view?usp=sharing

[pfeldman, 2014-11-17 14:11:22]

lgtm

[caseq, 2014-11-17 14:25:44]

The CQ bit was checked by caseq@chromium.org

[commit-bot: I haz the power, 2014-11-17 14:26:42]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/726653003/1

[commit-bot: I haz the power, 2014-11-17 16:23:39]

Committed patchset #1 (id:1) as 185452