Make units-000.htm from ietestcenter pass.

Make units-000.htm from ietestcenter pass.

In order to do this I had to:

- Change the incorrect unit vm to vmin which was already done on the IE test
  center site.

- Modify the test to use a font-size of 20px instead of 16px for the Ahem
  font to work around a font rendering issue in Blink.

- Better support for viewport relative lengths for border.

  Viewport relative lengths for the border-width properties translated from
  the number value of the viewport relative units to a pixel length without
  taking the viewport size into account. The code now converts to a px length
  through conversion of a Length object using the RenderView.

BUG=webkit.org/b/85308

Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=159363

[rune, 2013-10-10 11:59:45]

https://codereview.chromium.org/26802003/diff/1/Source/core/css/resolver/Styl...
File Source/core/css/resolver/StyleBuilderCustom.h (right):

https://codereview.chromium.org/26802003/diff/1/Source/core/css/resolver/Styl...
Source/core/css/resolver/StyleBuilderCustom.h:72: return
intValueForLength(primitiveValue->viewportPercentageLength(), 0,
state.document().renderView());

To reviewer:

I should have converted to float instead of int? Current callers either use
unsigned or unsigned short. The whole convert to template type T without range
checks in this method feels bad in the first place.

[eae, 2013-10-10 15:25:00]

LGTM

https://codereview.chromium.org/26802003/diff/1/Source/core/css/resolver/Styl...
File Source/core/css/resolver/StyleBuilderCustom.h (right):

https://codereview.chromium.org/26802003/diff/1/Source/core/css/resolver/Styl...
Source/core/css/resolver/StyleBuilderCustom.h:72: return
intValueForLength(primitiveValue->viewportPercentageLength(), 0,
state.document().renderView());
Ints is right for borders. Good catch.

[commit-bot: I haz the power, 2013-10-10 16:23:28]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/rune@opera.com/26802003/1

[commit-bot: I haz the power, 2013-10-10 17:38:31]

Retried try job too often on linux_blink_rel for step(s) webkit_tests
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=linux_blin...

[commit-bot: I haz the power, 2013-10-10 17:59:52]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/rune@opera.com/26802003/1

[commit-bot: I haz the power, 2013-10-10 19:06:25]

Change committed as 159363