https://bugs.webkit.org/show_bug.cgi?id=80673

Reviewed by Geoffrey Garen.

* parser/Lexer.cpp:
(JSC::::lex):
* runtime/JSGlobalObjectFunctions.cpp:
(JSC::parseInt):
(JSC):
(JSC::jsStrDecimalLiteral): Added another template argument that exposes whether or not
we accept trailing junk to clients of jsStrDecimalLiteral. Also added additional template 
parameter for strtod to allow trailing spaces.
(JSC::toDouble):
(JSC::parseFloat): Accept trailing junk, as per the ECMA 262 spec (15.1.2.3).
* runtime/LiteralParser.cpp:
(JSC::::Lexer::lexNumber):
* tests/mozilla/expected.html: Update the expected page for run-javascriptcore-tests so that 
we will run ecma/TypeConversion/9.3.1-3.js as a regression test now.
* wtf/dtoa.cpp:
(WTF):
(WTF::strtod): We also needed to sometimes accept trailing spaces to pass a few other tests that were 
broken by changing the default allowance of trailing junk in jsStrDecimalLiteral.
* wtf/dtoa.h:
* wtf/dtoa/double-conversion.cc: When the AdvanceToNonspace function was lifted out of the 
Chromium codebase, the person porting it only thought to check for spaces when skipping whitespace.
A few of our JSC tests check for other types of trailing whitespace, so I've added checks for those 
here to cover those cases (horizontal tab, vertical tab, carriage return, form feed, and line feed).
* wtf/text/WTFString.cpp:
(WTF::toDoubleType): Disallow trailing spaces, as this breaks form input verification stuff.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@110657 268f45cc-cd09-0410-ab3c-d52691b4dbfc