More #include cleaning
 - Drop Expr.h,RecordLayout.h from ASTContext.h (for DeclBase.h and
   SourceLocation.h)
 - Move ASTContext constructor into implementation

llvm-svn: 54627
diff --git a/clang/lib/CodeGen/CGObjCMac.cpp b/clang/lib/CodeGen/CGObjCMac.cpp
index af3745fe..b9d6221 100644
--- a/clang/lib/CodeGen/CGObjCMac.cpp
+++ b/clang/lib/CodeGen/CGObjCMac.cpp
@@ -14,6 +14,7 @@
 #include "CGObjCRuntime.h"
 #include "CodeGenModule.h"
 #include "clang/AST/ASTContext.h"
+#include "clang/AST/Decl.h"
 #include "llvm/Module.h"
 #include "llvm/Support/Compiler.h"
 #include "llvm/Support/IRBuilder.h"