[clang] [C++20][Modules] Implement P1857R3 Modules Dependency Discovery (PR #107168)

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@@ -17,13 +17,16 @@
 #include "clang/AST/DeclTemplate.h"
 #include "clang/Basic/DiagnosticParse.h"
 #include "clang/Basic/StackExhaustionHandler.h"
+#include "clang/Basic/TokenKinds.h"
+#include "clang/Lex/ModuleLoader.h"
 #include "clang/Parse/RAIIObjectsForParser.h"
 #include "clang/Sema/DeclSpec.h"
 #include "clang/Sema/EnterExpressionEvaluationContext.h"
 #include "clang/Sema/ParsedTemplate.h"
 #include "clang/Sema/Scope.h"
 #include "clang/Sema/SemaCodeCompletion.h"
 #include "llvm/ADT/STLForwardCompat.h"
+#include "llvm/ADT/StringRef.h"
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yronglin wrote:

Removed

https://github.com/llvm/llvm-project/pull/107168