Have SourceBuffer throw TypeError for non-finite doubles.

Switch to throwing TypeError instead of TypeMismatchError when encountering
non-finite doubles, following what WebIDL requires

 http://heycam.github.io/webidl/#es-double

R=acolwell@chromium.org
BUG=353245

Review URL: https://codereview.chromium.org/212953004

git-svn-id: svn://svn.chromium.org/blink/trunk@170098 bbb929c8-8fbe-4397-9dbb-9b2b20218538
3 files changed