Full AST support and better Sema support for C++ try-catch.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@61346 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/Sema.h b/lib/Sema/Sema.h
index c179fe8..48af5af 100644
--- a/lib/Sema/Sema.h
+++ b/lib/Sema/Sema.h
@@ -640,9 +640,9 @@
   virtual OwningStmtResult ActOnCXXCatchBlock(SourceLocation CatchLoc,
                                               DeclTy *ExDecl,
                                               StmtArg HandlerBlock);
-  //virtual OwningStmtResult ActOnCXXTryBlock(SourceLocation TryLoc,
-  //                                          StmtArg TryBlock,
-  //                                          MultiStmtArg Handlers);
+  virtual OwningStmtResult ActOnCXXTryBlock(SourceLocation TryLoc,
+                                            StmtArg TryBlock,
+                                            MultiStmtArg Handlers);
 
   //===--------------------------------------------------------------------===//
   // Expression Parsing Callbacks: SemaExpr.cpp.