Move methods from Map to TyCtxt, part 3.

Continuing the work from #137162.

Every method gains a `hir_` prefix.

src/librustdoc/scrape_examples.rs

@@ -177,7 +177,7 @@ where
         // If the enclosing item has a span coming from a proc macro, then we also don't want to
         // include the example.
         let enclosing_item_span =
-            tcx.hir().span_with_body(tcx.hir().get_parent_item(ex.hir_id).into());
+            tcx.hir().span_with_body(tcx.hir_get_parent_item(ex.hir_id).into());
         if enclosing_item_span.from_expansion() {
             trace!("Rejecting expr ({call_span:?}) from macro item: {enclosing_item_span:?}");
             return;