[llvm-rc] Add support for the optional CLASS statement for dialogs

Differential Revision: https://reviews.llvm.org/D46875

llvm-svn: 332386
diff --git a/llvm/tools/llvm-rc/ResourceScriptParser.h b/llvm/tools/llvm-rc/ResourceScriptParser.h
index 8e3cc55..3dd110f 100644
--- a/llvm/tools/llvm-rc/ResourceScriptParser.h
+++ b/llvm/tools/llvm-rc/ResourceScriptParser.h
@@ -171,6 +171,7 @@
   ParseOptionType parseCharacteristicsStmt();
   ParseOptionType parseVersionStmt();
   ParseOptionType parseCaptionStmt();
+  ParseOptionType parseClassStmt();
   ParseOptionType parseFontStmt(OptStmtType DialogType);
   ParseOptionType parseStyleStmt();