[v8] Convert string conversion calls to one byte versions
https://bugs.webkit.org/show_bug.cgi?id=107524

Patch by Dan Carney <dcarney@google.com> on 2013-01-22
Reviewed by Kentaro Hara.

No new tests. No change in functionality.

* bindings/v8/SerializedScriptValue.cpp:
* bindings/v8/V8StringResource.cpp:
(WebCore::WebCoreStringResourceBase::toWebCoreStringResourceBase):
(StringTraits):
(WebCore::true):
(WebCore::v8StringToWebCoreString):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@140409 268f45cc-cd09-0410-ab3c-d52691b4dbfc