Change ObjCRuntime GenerateProtocol[Ref] methods to take
    ObjCProtocolDecl directly.

Implement CodeGen support for forward protocol decls (no-ops are so
    nice to implement).

Also moved CGObjCRuntime.h out of CodeGenModule.h


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@54709 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CodeGenModule.h b/lib/CodeGen/CodeGenModule.h
index 3f30cd3..a837b63 100644
--- a/lib/CodeGen/CodeGenModule.h
+++ b/lib/CodeGen/CodeGenModule.h
@@ -15,7 +15,6 @@
 #define CLANG_CODEGEN_CODEGENMODULE_H
 
 #include "CodeGenTypes.h"
-#include "CGObjCRuntime.h"
 #include "clang/AST/Attr.h"
 #include "llvm/ADT/DenseMap.h"
 #include "llvm/ADT/StringMap.h"
@@ -51,6 +50,7 @@
 
   class CodeGenFunction;
   class CGDebugInfo;
+  class CGObjCRuntime;
   
 /// CodeGenModule - This class organizes the cross-module state that is used
 /// while generating LLVM code.