https://bugs.webkit.org/show_bug.cgi?id=85124

Reviewed by Anders Carlsson.

We don't actually use the alignment for anything.

* heap/WeakBlock.cpp:
(JSC::WeakBlock::create):
(JSC::WeakBlock::WeakBlock): Switched from aligned allocation to regular
allocation.

* heap/WeakBlock.h:
(WeakBlock): Don't use HeapBlock because HeapBlock requires aligned
allocation. This change required me to add some declarations that we used
to inherit from HeapBlock.

(WeakBlock::blockFor): Removed. This function relied on aligned allocation
but didn't do anything for us.

(WeakBlock::deallocate): Removed. WeakBlock doesn't own any of the deallocation
logic, so it shouldn't own the function.

* heap/WeakSet.cpp:
(JSC::WeakSet::~WeakSet):
(JSC::WeakSet::finalizeAll):
(JSC::WeakSet::visitLiveWeakImpls):
(JSC::WeakSet::visitDeadWeakImpls):
(JSC::WeakSet::sweep):
(JSC::WeakSet::shrink):
(JSC::WeakSet::resetAllocator):
(JSC::WeakSet::tryFindAllocator):
* heap/WeakSet.h:
(WeakSet): Updated declarations to reflect WeakBlock not inheriting from
HeapBlock. This allowed me to remove some casts, which was nice.

(JSC::WeakSet::deallocate): Directly set the deallocated flag instead of
asking WeakBlock to do it for us.  We don't need to have a WeakBlock
pointer to set the flag, so stop asking for one.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@115538 268f45cc-cd09-0410-ab3c-d52691b4dbfc