Prune includes.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@101059 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/CIndex/CIndexDiagnostic.h b/tools/CIndex/CIndexDiagnostic.h
index 79a5df0..919c21c 100644
--- a/tools/CIndex/CIndexDiagnostic.h
+++ b/tools/CIndex/CIndexDiagnostic.h
@@ -13,20 +13,21 @@
 #ifndef LLVM_CLANG_CINDEX_DIAGNOSTIC_H
 #define LLVM_CLANG_CINDEX_DIAGNOSTIC_H
 
-#include "clang-c/Index.h"
-#include "clang/Basic/Diagnostic.h"
-#include "clang/Basic/LangOptions.h"
-#include "llvm/ADT/SmallVector.h"
+struct CXUnsavedFile;
 
-namespace llvm { namespace sys {
-class Path;
-} }
+namespace llvm {
+template<typename T> class SmallVectorImpl;
+namespace sys { class Path; }
+}
 
 namespace clang {
 
 class Diagnostic;
+class FileManager;
 class LangOptions;
 class Preprocessor;
+class StoredDiagnostic;
+class SourceManager;
 
 /// \brief The storage behind a CXDiagnostic
 struct CXStoredDiagnostic {