Revert "Disable RBE for header-abi-dumper"

This reverts commit 6580d84f51.

Reason for revert: The bugfix for reproxy was released to this branch.

Test: make
Bug: 226497964
Change-Id: I38e30d3dc71fa7857a61fcadf5895075608fd966

cc/builder.go

@@ -702,8 +702,10 @@ func transformSourceToObj(ctx ModuleContext, subdir string, srcFiles, noTidySrcs
 			sAbiDumpFile := android.ObjPathWithExt(ctx, subdir, srcFile, "sdump")
 			sAbiDumpFiles = append(sAbiDumpFiles, sAbiDumpFile)
 
-			// TODO(b/226497964): dumpRule = sAbiDumpRE if USE_RBE and RBE_ABI_DUMPER are true.
 			dumpRule := sAbiDump
+			if ctx.Config().UseRBE() && ctx.Config().IsEnvTrue("RBE_ABI_DUMPER") {
+				dumpRule = sAbiDumpRE
+			}
 			ctx.Build(pctx, android.BuildParams{
 				Rule:        dumpRule,
 				Description: "header-abi-dumper " + srcFile.Rel(),