Oilpan: revert SVG GC mixin constructor workaround.

Following r191501 (http://crrev.com/980653002), the construction of
a GC mixin object is safe, preventing conservative GCs from going ahead
until the GC mixin object is in a valid state.

With that in place, revert the workaround for SVG mixins (r188695),
which restructured the mixin constructors such that they performed no
heap allocations while the constructed object was in an invalid state.

R=haraken
BUG=420515

Review URL: https://codereview.chromium.org/1025883002

git-svn-id: svn://svn.chromium.org/blink/trunk@192330 bbb929c8-8fbe-4397-9dbb-9b2b20218538
25 files changed
tree: 4904723971cbff32a7a581c55c3959af62334c78
  1. third_party/