Bug 164763

Summary: [WebCore] Drop frame protection for script execution
Product: WebKit Reporter: Yusuke Suzuki <ysuzuki>
Component: DOMAssignee: Nobody <webkit-unassigned>
Status: NEW ---    
Severity: Normal CC: cdumez, fred.wang, mcatanzaro
Priority: P2    
Version: WebKit Nightly Build   
Hardware: Unspecified   
OS: Unspecified   

Description Yusuke Suzuki 2016-11-14 20:28:01 PST 
In ScriptController and ScriptElement, there are some `Ref<Frame> protector(frame)` protections.
It avoids destroying Frame during executing scripts.

But if there are no code touching Frame after the execution of the script, we do not need to save Frame.
Comment 1 Yusuke Suzuki 2016-11-14 20:32:05 PST 
Not in ScriptElement.
Comment 2 Michael Catanzaro 2018-01-29 12:22:10 PST 
Be careful if changing this: the ScriptController is actually owned by its Frame, so removing protectors could cause the ScriptController itself to be destroyed.