Tag removed APIs as such in hiddenapi_flags.csv.

Refactor flags in generate_hiddenapi_lists.py" the invocation to use the
new more flexible schema. Add "--tag removed" to removed.txt APIs so
that we can identify those APIs in the final output.

Test: m -j out/soong/hiddenapi/hiddenapi-flags.csv
Bug: 171300342
Change-Id: I38f2ec7c6e2ff7e5bdd9fe2aeb771d5153a2dc99
diff --git a/java/hiddenapi_singleton.go b/java/hiddenapi_singleton.go
index 9d07e41..c3ae75e 100644
--- a/java/hiddenapi_singleton.go
+++ b/java/hiddenapi_singleton.go
@@ -258,17 +258,17 @@
 		Inputs(flagsCSV).
 		FlagWithInput("--unsupported ",
 			android.PathForSource(ctx, "frameworks/base/config/hiddenapi-unsupported.txt")).
-		FlagWithInput("--unsupported-ignore-conflicts ", combinedRemovedApis).
+		FlagWithInput("--unsupported ", combinedRemovedApis).Flag("--ignore-conflicts ").FlagWithArg("--tag ", "removed").
 		FlagWithInput("--max-target-q ",
 			android.PathForSource(ctx, "frameworks/base/config/hiddenapi-max-target-q.txt")).
 		FlagWithInput("--max-target-p ",
 			android.PathForSource(ctx, "frameworks/base/config/hiddenapi-max-target-p.txt")).
-		FlagWithInput("--max-target-o-ignore-conflicts ",
-			android.PathForSource(ctx, "frameworks/base/config/hiddenapi-max-target-o.txt")).
+		FlagWithInput("--max-target-o ", android.PathForSource(
+			ctx, "frameworks/base/config/hiddenapi-max-target-o.txt")).Flag("--ignore-conflicts ").
 		FlagWithInput("--blocked ",
 			android.PathForSource(ctx, "frameworks/base/config/hiddenapi-force-blocked.txt")).
-		FlagWithInput("--unsupported-packages ",
-			android.PathForSource(ctx, "frameworks/base/config/hiddenapi-unsupported-packages.txt")).
+		FlagWithInput("--unsupported ", android.PathForSource(
+			ctx, "frameworks/base/config/hiddenapi-unsupported-packages.txt")).Flag("--packages ").
 		FlagWithOutput("--output ", tempPath)
 
 	commitChangeForRestat(rule, tempPath, outputPath)