Dump the deobfuscate data using Protocol buffers

Using Google Protocol buffers to dump the obfuscating mapping
information of being used to deobfuscate items.
* shortened file path -> original file path
* resource id -> original resource name

This patch add a new option --save-obfuscating-map to deprecate
--resource-path-shortening-map. The option
--resource-path-shortening-map is kept until no one to use it.

Bug: 246489170
Bug: 228192695
     b/228192695#comment2
Test: make WITH_TIDY=1 aapt2
Test: atest aapt2_test

Change-Id: I29733c4dbae9f6dd2f0e9b2c87b0d2046662fc59
diff --git a/tools/aapt2/cmd/Optimize.h b/tools/aapt2/cmd/Optimize.h
index 794a87b..1879f25 100644
--- a/tools/aapt2/cmd/Optimize.h
+++ b/tools/aapt2/cmd/Optimize.h
@@ -58,6 +58,7 @@
   bool shorten_resource_paths = false;
 
   // Path to the output map of original resource paths to shortened paths.
+  // TODO(b/246489170): keep the old option and format until transform to the new one
   std::optional<std::string> shortened_paths_map_path;
 
   // Whether sparse encoding should be used for O+ resources.
@@ -65,6 +66,9 @@
 
   // Whether sparse encoding should be used for all resources.
   bool force_sparse_encoding = false;
+
+  // Path to the output map of original resource paths/names to obfuscated paths/names.
+  std::optional<std::string> obfuscation_map_path;
 };
 
 class OptimizeCommand : public Command {
@@ -120,9 +124,13 @@
     AddOptionalSwitch("--shorten-resource-paths",
         "Shortens the paths of resources inside the APK.",
         &options_.shorten_resource_paths);
+    // TODO(b/246489170): keep the old option and format until transform to the new one
     AddOptionalFlag("--resource-path-shortening-map",
-        "Path to output the map of old resource paths to shortened paths.",
-        &options_.shortened_paths_map_path);
+                    "[Deprecated]Path to output the map of old resource paths to shortened paths.",
+                    &options_.shortened_paths_map_path);
+    AddOptionalFlag("--save-obfuscation-map",
+                    "Path to output the map of original paths/names to obfuscated paths/names.",
+                    &options_.obfuscation_map_path);
     AddOptionalSwitch(
         "--deduplicate-entry-values",
         "Whether to deduplicate pairs of resource entry and value for simple resources.\n"