Add ScriptWrappable::hasPendingActivity to ScriptProcessorNode
|onaudioprocess| event in ScriptProcessor node is not fired once the JS
reference of the node goes out of local scope.
This CL is to keep the 'out-of-scope' reference from being collected when
it has an active |onaudioprocess| handler.
With this patch, scriptprocessornode-premature-death.html is now correctly passing. Thus the expected text was fixed accordingly.
BUG=577431,500335,360378,121654,82795
TEST=LayoutTests/webaudio/scriptprocessornode-premature-death.html (revised expected file)
Review URL: https://codereview.chromium.org/1762103002
Cr-Commit-Position: refs/heads/master@{#379586}
4 files changed
