Update a result vector when sampling animation effects.

Switch AnimationEffect::sample() from being functional and return a
new result vector to instead take a result vector to update. This lets animation
loops that repeatedly sample to reuse their vector allocations.

R=dstockwell,shans
BUG=
NOTRY=true

Review URL: https://codereview.chromium.org/732153003

git-svn-id: svn://svn.chromium.org/blink/trunk@185840 bbb929c8-8fbe-4397-9dbb-9b2b20218538
13 files changed
tree: d1f4adf35fa4aa44dc256f6ec5077e4af6c227b1
  1. third_party/