https://bugs.webkit.org/show_bug.cgi?id=75114
        
Reviewed by Darin Adler.

No performance difference.
        
I think this is a step toward removing -fomit-frame-pointer.

* runtime/JSString.cpp:
* runtime/JSString.h: Removed the test and special case for a single-character
search string because the standard path does this test and special case
for us. (As an aside, if we do come up with a unique single-character
replace optimization in future, it probably belongs in the replace function,
and not in JSString.)

* runtime/StringPrototype.cpp:
(JSC::stringProtoFuncReplace): Split this mega-sized function into:
(JSC::replaceUsingStringSearch): - This reasonably sized function, and
(JSC::replaceUsingRegExpSearch): - This still mega-sized function.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@103626 268f45cc-cd09-0410-ab3c-d52691b4dbfc