diff --git a/mozilla/xpcom/string/public/nsReadableUtils.h b/mozilla/xpcom/string/public/nsReadableUtils.h
index 8374bd13cf1..eebfc7af6c6 100755
--- a/mozilla/xpcom/string/public/nsReadableUtils.h
+++ b/mozilla/xpcom/string/public/nsReadableUtils.h
@@ -48,6 +48,9 @@ NS_COM size_t Distance( const nsReadingIterator<char>&, const nsReadingIterator<
 NS_COM void LossyCopyUTF16toASCII( const nsAString& aSource, nsACString& aDest );
 NS_COM void CopyASCIItoUTF16( const nsACString& aSource, nsAString& aDest );
 
+NS_COM void LossyCopyUTF16toASCII( const PRUnichar* aSource, nsACString& aDest );
+NS_COM void CopyASCIItoUTF16( const char* aSource, nsAString& aDest );
+
 NS_COM void CopyUTF16toUTF8( const nsAString& aSource, nsACString& aDest );
 NS_COM void CopyUTF8toUTF16( const nsACString& aSource, nsAString& aDest );
 
diff --git a/mozilla/xpcom/string/src/nsReadableUtils.cpp b/mozilla/xpcom/string/src/nsReadableUtils.cpp
index e2cb5518b72..6baa85cddc6 100755
--- a/mozilla/xpcom/string/src/nsReadableUtils.cpp
+++ b/mozilla/xpcom/string/src/nsReadableUtils.cpp
@@ -162,6 +162,26 @@ CopyASCIItoUTF16( const nsACString& aSource, nsAString& aDest )
     AppendASCIItoUTF16(aSource, aDest);
   }
 
+NS_COM
+void
+LossyCopyUTF16toASCII( const PRUnichar* aSource, nsACString& aDest )
+  {
+    if (aSource) {
+      aDest.Truncate();
+      LossyAppendUTF16toASCII(nsDependentString(aSource), aDest);
+    }
+  }
+
+NS_COM
+void
+CopyASCIItoUTF16( const char* aSource, nsAString& aDest )
+  {
+    if (aSource) {
+      aDest.Truncate();
+      AppendASCIItoUTF16(nsDependentCString(aSource), aDest);
+    }
+  }
+
 NS_COM
 void
 CopyUTF16toUTF8( const nsAString& aSource, nsACString& aDest )