Worker: Remove unnecessary error handling in WorkerOrWorkletScriptController::Initialize()

This is a follow-up for comments in the previous code review:

Error cases handled in WorkerOrWorkletScriptController::Initialize() never
happen according to the comments. This CL removes the cases.

Bug: n/a
Change-Id: I44ab6db7213cecb5cd6e31a66b70bb53b3829560
Reviewed-by: Kentaro Hara <>
Reviewed-by: Kenichi Ishibashi <>
Reviewed-by: Yuki Shiino <>
Reviewed-by: Matt Falkenhagen <>
Commit-Queue: Hiroki Nakagawa <>
Cr-Commit-Position: refs/heads/master@{#661659}
9 files changed