Move GlobalDecl to AST

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@132973 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGDebugInfo.h b/lib/CodeGen/CGDebugInfo.h
index 6ec6b65..eb1b22d 100644
--- a/lib/CodeGen/CGDebugInfo.h
+++ b/lib/CodeGen/CGDebugInfo.h
@@ -33,11 +33,11 @@
   class VarDecl;
   class ObjCInterfaceDecl;
   class ClassTemplateSpecializationDecl;
+  class GlobalDecl;
 
 namespace CodeGen {
   class CodeGenModule;
   class CodeGenFunction;
-  class GlobalDecl;
   class CGBlockInfo;
 
 /// CGDebugInfo - This class gathers all debug information during compilation