Add TypeChecking=Unrestricted to SVGElements where applicable

Add TypeChecking=Unrestricted to SVGElements where applicable

Affects the following methods:

  SVGAnimationElement.beginElementAt(float offset)
  SVGAnimationElement.endElementAt(float offset)
  SVGFEDropShadowElement.setStdDeviation(float ..., float ...)
  SVGFEGaussianBlurElement.setStdDeviation(float ..., float ...)

The new behavior matches Gecko.

Adjust the test svg/custom/elementTimeControl-nan-crash.html to handle the
exception and make it call dumpAsText earlier.

BUG=354298, 311246
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=190359

[fs, 2015-02-16 16:36:57]

fs@opera.com changed reviewers:
+ ed@opera.com, pdr@chromium.org

[Erik Dahlström (inactive), 2015-02-17 13:59:35]

lgtm, for completeness might be good to add a test using Infinity for
begin/endElementAt too.

[fs, 2015-02-17 14:05:28]

On 2015/02/17 13:59:35, Erik Dahlström wrote:
> lgtm, for completeness might be good to add a test using Infinity for
> begin/endElementAt too.

There was/are tests for those already (the change to the test was to test each
argument of the two-arity methods separately.)

[pdr., 2015-02-17 22:32:45]

The CQ bit was checked by pdr@chromium.org

[pdr., 2015-02-17 22:32:46]

LGTM2

[commit-bot: I haz the power, 2015-02-17 22:33:43]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/931583003/1

[commit-bot: I haz the power, 2015-02-17 22:38:48]

Committed patchset #1 (id:1) as
https://src.chromium.org/viewvc/blink?view=rev&revision=190359