Change members's order and combine duplicated method for FFTFrame.

realData, imagData are common members for all platform and solution.
It doesn't need to be under each solution's macro.
Then, additionally wrong style has been fixed.

BUG=411127

Review URL: https://codereview.chromium.org/536843002

git-svn-id: svn://svn.chromium.org/blink/trunk@181442 bbb929c8-8fbe-4397-9dbb-9b2b20218538
adoptNode wasn't clearing the accessibility cache.

I don't believe this was a recent regression, it's possible that recent
changes simply made it easier to trigger this crash.

BUG=409506

Review URL: https://codereview.chromium.org/539603002

git-svn-id: svn://svn.chromium.org/blink/trunk@181443 bbb929c8-8fbe-4397-9dbb-9b2b20218538