Sema::ActOnStartClassInterface(): Use PushOnScopeChains().

This enables class recognition to work with PCH. I believe this means we can remove Sema::ObjCInterfaceDecls and it's usage within Sema::LookupName(). Will investigate.

llvm-svn: 69891
diff --git a/clang/lib/Frontend/PCHReader.cpp b/clang/lib/Frontend/PCHReader.cpp
index 0e2d06e..0502a87 100644
--- a/clang/lib/Frontend/PCHReader.cpp
+++ b/clang/lib/Frontend/PCHReader.cpp
@@ -2742,7 +2742,7 @@
   case DeclarationName::ObjCZeroArgSelector:
   case DeclarationName::ObjCOneArgSelector:
   case DeclarationName::ObjCMultiArgSelector:
-    assert(false && "Unable to de-serialize Objective-C selectors");
+    return DeclarationName(GetSelector(Record, Idx));
     break;
 
   case DeclarationName::CXXConstructorName: