Added std::string to Value via Set/GetString overloading.

All input is converted to UTF-8.  Output is converted back to wide during std::wstring version of GetString().

This is part one of some more patches to come where I switch clients over to UTF-8 strings.

Review URL: http://codereview.chromium.org/13230

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@6768 0039d316-1c4b-4281-b951-d872f2087c98
3 files changed