commit 8a2df0fa22d77350654a3b700443f4f2707a2d21
author sigbjornf@opera.com <sigbjornf@opera.com> Mon Nov 24 07:28:00 2014
committer sigbjornf@opera.com <sigbjornf@opera.com> Mon Nov 24 07:28:00 2014
tree a4db5b3bafbc4c61ab9eda83edcfd651f0078ba2
parent c1e45d72b3c8434746fd72d0b256bea37f07b0be

Have ProcessingInstruction's XSLT event listener keep a weak backreference

To avoid an unnecessary strong-reference cycle between
ProcessingInstruction and its owned "XSLT event listener", have the
latter keep an effectively-weak reference. ProcessingInstruction is
responsible to detach itself and clear that weak reference when it
is finalized.

R=haraken
BUG=367689

Review URL: https://codereview.chromium.org/738443003

git-svn-id: svn://svn.chromium.org/blink/trunk@185858 bbb929c8-8fbe-4397-9dbb-9b2b20218538