[svg] Make svgView override existing data selectively.

The change is to not blow off all the existing viewBox,
pAR, etc when an #svgView(...) is used. Instead only
replace the parts that are actually specified in the
svgView syntax.

BUG=444553

Review URL: https://codereview.chromium.org/1015743003

git-svn-id: svn://svn.chromium.org/blink/trunk@192174 bbb929c8-8fbe-4397-9dbb-9b2b20218538
4 files changed
tree: d60a1d5350e599388cfafa059644740dc8cc6dbb
  1. third_party/