Use SVGLength-references in the SVGLengthContext API

Use SVGLength-references in the SVGLengthContext API

Convert all the PassRefPtrWillBeRawPtr<SVGLength>-typed arguments to
const SVGLength&. This avoids unnecessary ref-count churn (the caller will
always own a reference anyway). As a side-effect footprint is reduced by
~2k. (resolveRectangle<T> can now be properly inlined and other methods
shrink a bit.)

Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=190070

[fs, 2015-02-12 17:47:28]

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

[pdr., 2015-02-12 20:00:59]

The CQ bit was checked by pdr@chromium.org

[pdr., 2015-02-12 20:00:59]

LGTM

I learned about GradientAttributes while reviewing this... such complexity, much
wow. No change needed in this patch, just venting..

[commit-bot: I haz the power, 2015-02-12 20:01:21]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/921823002/1

[commit-bot: I haz the power, 2015-02-12 20:04:04]

Committed patchset #1 (id:1) as
https://src.chromium.org/viewvc/blink?view=rev&revision=190070

[fs, 2015-02-13 09:56:56]

On 2015/02/12 20:00:59, pdr wrote:
...
> I learned about GradientAttributes while reviewing this... such complexity,
much
> wow. No change needed in this patch, just venting..

I can only agree...