This patch fixes Heap::ClearJSFunctionResultCaches() the same way...

This patch fixes Heap::ClearJSFunctionResultCaches() the same way
that Heap::ClearNormalizedMapCache() was implemented in r5654.
The existing code effectively does not clear the JSFunctionResultCaches
at all.  With this patch, the caches are now cleared during a GC.

This patch has been tested by running tools/test.py.
There is only one failure:
obj/test/release/cctest test-api/Threading --testing_serialization_file=obj/test/release/serdes_Threading

However, the failure is due to Heap::ClearNormalizedMapCaches()
expecting to fetch a NormalizedMapCache instance but instead gets
something that is all of the following:

HeapObject Symbol JSObject UndetectableObject AccessCheckNeeded

i.e. the Is<XXX>() test returns true for the above.

When I comment out the one line in my patch where I actually clear
the cache, the test passes again.  It looks like there's a hidden
bug in the serialization code, and this patch merely exposed it
when the cache is made to be cleared as expected.

[Vyacheslav Egorov (Chromium), 2010-10-29 08:23:51]

Thanks for the patch. 

Landed as http://code.google.com/p/v8/source/detail?r=5738

Closing this issue.