[clang] [clang-tools-extra] [clang] NFC: rename TagType::getOriginalDecl back to getDecl (PR #163271)

[Jordan Rupprecht via cfe-commits]

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@@ -6419,10 +6419,7 @@ class TagType : public TypeWithKeyword {
           bool IsInjected, const Type *CanonicalType);
 
 public:
-  // FIXME: Temporarily renamed from `getDecl` in order to facilitate
-  // rebasing, due to change in behaviour. This should be renamed back
-  // to `getDecl` once the change is settled.
-  TagDecl *getOriginalDecl() const { return decl; }
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rupprecht wrote:

Can we leave in wrappers for the various `getOriginalDecl()` methods that will forward to `getDecl()`? That would allow for a non-atomic migration. These have a lot of callers, especially `RecordType::getOriginalDecl`.

https://github.com/llvm/llvm-project/pull/163271