Expose latin1 methods in WebString

public/platform/WebString.h

Index: public/platform/WebString.h
diff --git a/public/platform/WebString.h b/public/platform/WebString.h
index bbddef5b8fb169229a84b04e6caec0a4e2b52d19..a1376030f6635d779b9375725e55db115ca1ab96 100644
--- a/public/platform/WebString.h
+++ b/public/platform/WebString.h
@@ -99,6 +99,15 @@ public:
         return fromUTF8(s.data(), s.length());
     }
 
+    BLINK_COMMON_EXPORT std::string latin1() const;
+
+    BLINK_COMMON_EXPORT static WebString fromLatin1(const char* data, size_t length);

[abarth-chromium, 2013/09/03 15:46:40]

I wonder if we should use WebLChar here instead of char...  That will make the
call sites uglier, but maybe that's a good idea because its rare that people
want to call this function.

[davidben, 2013/09/03 17:58:25]

Done. Though it doesn't actually end up doing much since there's the std::string
version. Just the implementation of fromLatin1(const std::string& s) gets ugly.

+
+    static WebString fromLatin1(const std::string& s)
+    {
+        return fromLatin1(s.data(), s.length());
+    }
+
     template <int N> WebString(const char (&data)[N])
     {
         assign(fromUTF8(data, N - 1));