Partial AST and Sema support for C++ try-catch.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@61337 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/Sema.h b/lib/Sema/Sema.h
index f8923b4..c179fe8 100644
--- a/lib/Sema/Sema.h
+++ b/lib/Sema/Sema.h
@@ -636,10 +636,10 @@
                                                  ExprTy *SynchExpr, 
                                                  StmtTy *SynchBody);
 
-  //virtual DeclTy *ActOnExceptionDeclarator(Scope *S, Declarator &D);
-  //virtual OwningStmtResult ActOnCXXCatchBlock(SourceLocation CatchLoc,
-  //                                            DeclTy *ExceptionDecl,
-  //                                            StmtArg HandlerBlock);
+  virtual DeclTy *ActOnExceptionDeclarator(Scope *S, Declarator &D);
+  virtual OwningStmtResult ActOnCXXCatchBlock(SourceLocation CatchLoc,
+                                              DeclTy *ExDecl,
+                                              StmtArg HandlerBlock);
   //virtual OwningStmtResult ActOnCXXTryBlock(SourceLocation TryLoc,
   //                                          StmtArg TryBlock,
   //                                          MultiStmtArg Handlers);