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diff --git a/include/clang/AST/NSAPI.h b/include/clang/AST/NSAPI.h
deleted file mode 100644
index 583f9d9..0000000
--- a/include/clang/AST/NSAPI.h
+++ /dev/null
@@ -1,262 +0,0 @@
-//===--- NSAPI.h - NSFoundation APIs ----------------------------*- C++ -*-===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef LLVM_CLANG_AST_NSAPI_H
-#define LLVM_CLANG_AST_NSAPI_H
-
-#include "clang/Basic/IdentifierTable.h"
-#include "llvm/ADT/ArrayRef.h"
-#include "llvm/ADT/Optional.h"
-
-namespace clang {
-  class ASTContext;
-  class ObjCInterfaceDecl;
-  class QualType;
-  class Expr;
-
-// \brief Provides info and caches identifiers/selectors for NSFoundation API.
-class NSAPI {
-public:
-  explicit NSAPI(ASTContext &Ctx);
-
-  ASTContext &getASTContext() const { return Ctx; }
-
-  enum NSClassIdKindKind {
-    ClassId_NSObject,
-    ClassId_NSString,
-    ClassId_NSArray,
-    ClassId_NSMutableArray,
-    ClassId_NSDictionary,
-    ClassId_NSMutableDictionary,
-    ClassId_NSNumber,
-    ClassId_NSMutableSet,
-    ClassId_NSMutableOrderedSet,
-    ClassId_NSValue
-  };
-  static const unsigned NumClassIds = 10;
-
-  enum NSStringMethodKind {
-    NSStr_stringWithString,
-    NSStr_stringWithUTF8String,
-    NSStr_stringWithCStringEncoding,
-    NSStr_stringWithCString,
-    NSStr_initWithString,
-    NSStr_initWithUTF8String
-  };
-  static const unsigned NumNSStringMethods = 5;
-
-  IdentifierInfo *getNSClassId(NSClassIdKindKind K) const;
-
-  /// \brief The Objective-C NSString selectors.
-  Selector getNSStringSelector(NSStringMethodKind MK) const;
-
-  /// \brief Return NSStringMethodKind if \param Sel is such a selector.
-  Optional<NSStringMethodKind> getNSStringMethodKind(Selector Sel) const;
-
-  /// \brief Returns true if the expression \param E is a reference of
-  /// "NSUTF8StringEncoding" enum constant.
-  bool isNSUTF8StringEncodingConstant(const Expr *E) const {
-    return isObjCEnumerator(E, "NSUTF8StringEncoding", NSUTF8StringEncodingId);
-  }
-
-  /// \brief Returns true if the expression \param E is a reference of
-  /// "NSASCIIStringEncoding" enum constant.
-  bool isNSASCIIStringEncodingConstant(const Expr *E) const {
-    return isObjCEnumerator(E, "NSASCIIStringEncoding",NSASCIIStringEncodingId);
-  }
-
-  /// \brief Enumerates the NSArray/NSMutableArray methods used to generate
-  /// literals and to apply some checks.
-  enum NSArrayMethodKind {
-    NSArr_array,
-    NSArr_arrayWithArray,
-    NSArr_arrayWithObject,
-    NSArr_arrayWithObjects,
-    NSArr_arrayWithObjectsCount,
-    NSArr_initWithArray,
-    NSArr_initWithObjects,
-    NSArr_objectAtIndex,
-    NSMutableArr_replaceObjectAtIndex,
-    NSMutableArr_addObject,
-    NSMutableArr_insertObjectAtIndex,
-    NSMutableArr_setObjectAtIndexedSubscript
-  };
-  static const unsigned NumNSArrayMethods = 12;
-
-  /// \brief The Objective-C NSArray selectors.
-  Selector getNSArraySelector(NSArrayMethodKind MK) const;
-
-  /// \brief Return NSArrayMethodKind if \p Sel is such a selector.
-  Optional<NSArrayMethodKind> getNSArrayMethodKind(Selector Sel);
-
-  /// \brief Enumerates the NSDictionary/NSMutableDictionary methods used
-  /// to generate literals and to apply some checks.
-  enum NSDictionaryMethodKind {
-    NSDict_dictionary,
-    NSDict_dictionaryWithDictionary,
-    NSDict_dictionaryWithObjectForKey,
-    NSDict_dictionaryWithObjectsForKeys,
-    NSDict_dictionaryWithObjectsForKeysCount,
-    NSDict_dictionaryWithObjectsAndKeys,
-    NSDict_initWithDictionary,
-    NSDict_initWithObjectsAndKeys,
-    NSDict_initWithObjectsForKeys,
-    NSDict_objectForKey,
-    NSMutableDict_setObjectForKey,
-    NSMutableDict_setObjectForKeyedSubscript,
-    NSMutableDict_setValueForKey
-  };
-  static const unsigned NumNSDictionaryMethods = 14;
-  
-  /// \brief The Objective-C NSDictionary selectors.
-  Selector getNSDictionarySelector(NSDictionaryMethodKind MK) const;
-
-  /// \brief Return NSDictionaryMethodKind if \p Sel is such a selector.
-  Optional<NSDictionaryMethodKind> getNSDictionaryMethodKind(Selector Sel);
-
-  /// \brief Enumerates the NSMutableSet/NSOrderedSet methods used
-  /// to apply some checks.
-  enum NSSetMethodKind {
-    NSMutableSet_addObject,
-    NSOrderedSet_insertObjectAtIndex,
-    NSOrderedSet_setObjectAtIndex,
-    NSOrderedSet_setObjectAtIndexedSubscript,
-    NSOrderedSet_replaceObjectAtIndexWithObject
-  };
-  static const unsigned NumNSSetMethods = 5;
-
-  /// \brief The Objective-C NSSet selectors.
-  Selector getNSSetSelector(NSSetMethodKind MK) const;
-
-  /// \brief Return NSSetMethodKind if \p Sel is such a selector.
-  Optional<NSSetMethodKind> getNSSetMethodKind(Selector Sel);
-
-  /// \brief Returns selector for "objectForKeyedSubscript:".
-  Selector getObjectForKeyedSubscriptSelector() const {
-    return getOrInitSelector(StringRef("objectForKeyedSubscript"),
-                             objectForKeyedSubscriptSel);
-  }
-
-  /// \brief Returns selector for "objectAtIndexedSubscript:".
-  Selector getObjectAtIndexedSubscriptSelector() const {
-    return getOrInitSelector(StringRef("objectAtIndexedSubscript"),
-                             objectAtIndexedSubscriptSel);
-  }
-
-  /// \brief Returns selector for "setObject:forKeyedSubscript".
-  Selector getSetObjectForKeyedSubscriptSelector() const {
-    StringRef Ids[] = { "setObject", "forKeyedSubscript" };
-    return getOrInitSelector(Ids, setObjectForKeyedSubscriptSel);
-  }
-
-  /// \brief Returns selector for "setObject:atIndexedSubscript".
-  Selector getSetObjectAtIndexedSubscriptSelector() const {
-    StringRef Ids[] = { "setObject", "atIndexedSubscript" };
-    return getOrInitSelector(Ids, setObjectAtIndexedSubscriptSel);
-  }
-
-  /// \brief Returns selector for "isEqual:".
-  Selector getIsEqualSelector() const {
-    return getOrInitSelector(StringRef("isEqual"), isEqualSel);
-  }
-
-  /// \brief Enumerates the NSNumber methods used to generate literals.
-  enum NSNumberLiteralMethodKind {
-    NSNumberWithChar,
-    NSNumberWithUnsignedChar,
-    NSNumberWithShort,
-    NSNumberWithUnsignedShort,
-    NSNumberWithInt,
-    NSNumberWithUnsignedInt,
-    NSNumberWithLong,
-    NSNumberWithUnsignedLong,
-    NSNumberWithLongLong,
-    NSNumberWithUnsignedLongLong,
-    NSNumberWithFloat,
-    NSNumberWithDouble,
-    NSNumberWithBool,
-    NSNumberWithInteger,
-    NSNumberWithUnsignedInteger
-  };
-  static const unsigned NumNSNumberLiteralMethods = 15;
-
-  /// \brief The Objective-C NSNumber selectors used to create NSNumber literals.
-  /// \param Instance if true it will return the selector for the init* method
-  /// otherwise it will return the selector for the number* method.
-  Selector getNSNumberLiteralSelector(NSNumberLiteralMethodKind MK,
-                                      bool Instance) const;
-
-  bool isNSNumberLiteralSelector(NSNumberLiteralMethodKind MK,
-                                 Selector Sel) const {
-    return Sel == getNSNumberLiteralSelector(MK, false) ||
-           Sel == getNSNumberLiteralSelector(MK, true);
-  }
-
-  /// \brief Return NSNumberLiteralMethodKind if \p Sel is such a selector.
-  Optional<NSNumberLiteralMethodKind>
-      getNSNumberLiteralMethodKind(Selector Sel) const;
-
-  /// \brief Determine the appropriate NSNumber factory method kind for a
-  /// literal of the given type.
-  Optional<NSNumberLiteralMethodKind>
-      getNSNumberFactoryMethodKind(QualType T) const;
-
-  /// \brief Returns true if \param T is a typedef of "BOOL" in objective-c.
-  bool isObjCBOOLType(QualType T) const;
-  /// \brief Returns true if \param T is a typedef of "NSInteger" in objective-c.
-  bool isObjCNSIntegerType(QualType T) const;
-  /// \brief Returns true if \param T is a typedef of "NSUInteger" in objective-c.
-  bool isObjCNSUIntegerType(QualType T) const;
-  /// \brief Returns one of NSIntegral typedef names if \param T is a typedef
-  /// of that name in objective-c.
-  StringRef GetNSIntegralKind(QualType T) const;
-
-  /// \brief Returns \c true if \p Id is currently defined as a macro.
-  bool isMacroDefined(StringRef Id) const;
-
-  /// \brief Returns \c true if \p InterfaceDecl is subclass of \p NSClassKind
-  bool isSubclassOfNSClass(ObjCInterfaceDecl *InterfaceDecl,
-                           NSClassIdKindKind NSClassKind) const;
-
-private:
-  bool isObjCTypedef(QualType T, StringRef name, IdentifierInfo *&II) const;
-  bool isObjCEnumerator(const Expr *E,
-                        StringRef name, IdentifierInfo *&II) const;
-  Selector getOrInitSelector(ArrayRef<StringRef> Ids, Selector &Sel) const;
-
-  ASTContext &Ctx;
-
-  mutable IdentifierInfo *ClassIds[NumClassIds];
-
-  mutable Selector NSStringSelectors[NumNSStringMethods];
-
-  /// \brief The selectors for Objective-C NSArray methods.
-  mutable Selector NSArraySelectors[NumNSArrayMethods];
-
-  /// \brief The selectors for Objective-C NSDictionary methods.
-  mutable Selector NSDictionarySelectors[NumNSDictionaryMethods];
-
-  /// \brief The selectors for Objective-C NSSet methods.
-  mutable Selector NSSetSelectors[NumNSSetMethods];
-
-  /// \brief The Objective-C NSNumber selectors used to create NSNumber literals.
-  mutable Selector NSNumberClassSelectors[NumNSNumberLiteralMethods];
-  mutable Selector NSNumberInstanceSelectors[NumNSNumberLiteralMethods];
-
-  mutable Selector objectForKeyedSubscriptSel, objectAtIndexedSubscriptSel,
-                   setObjectForKeyedSubscriptSel,setObjectAtIndexedSubscriptSel,
-                   isEqualSel;
-
-  mutable IdentifierInfo *BOOLId, *NSIntegerId, *NSUIntegerId;
-  mutable IdentifierInfo *NSASCIIStringEncodingId, *NSUTF8StringEncodingId;
-};
-
-}  // end namespace clang
-
-#endif // LLVM_CLANG_AST_NSAPI_H