Remove raw values from proto APK

Raw attribute values are not included in xml files when building binary
APKs but they are when building proto APKs. Remove raw attribute values
and create a new convert flag that (--keep-raw-values) that allows raw
value to be kept.

Also added flag to link to keep raw attribute values.

Bug: 115915884
Bug: 116700688
Test: aapt2_tests
Change-Id: Id50136b775b3f43d159ca06181282f6a7b8eaf40
diff --git a/tools/aapt2/cmd/Link.h b/tools/aapt2/cmd/Link.h
index 950dac20..4beb0ad 100644
--- a/tools/aapt2/cmd/Link.h
+++ b/tools/aapt2/cmd/Link.h
@@ -75,6 +75,7 @@
 
   // Flattening options.
   TableFlattenerOptions table_flattener_options;
+  bool keep_raw_values = false;
 
   // Split APK options.
   TableSplitterOptions table_splitter_options;
@@ -242,6 +243,8 @@
         &options_.extensions_to_not_compress);
     AddOptionalSwitch("--no-compress", "Do not compress any resources.",
         &options_.do_not_compress_anything);
+    AddOptionalSwitch("--keep-raw-values", "Preserve raw attribute values in xml files.",
+        &options_.keep_raw_values);
     AddOptionalSwitch("--warn-manifest-validation",
         "Treat manifest validation errors as warnings.",
         &options_.manifest_fixer_options.warn_validation);
@@ -250,7 +253,6 @@
             "Syntax: path/to/output.apk:<config>[,<config>[...]].\n"
             "On Windows, use a semicolon ';' separator instead.",
         &split_args_);
-    AddOptionalSwitch("-v", "Enables verbose logging.", &verbose_);
     AddOptionalSwitch("--debug-mode",
         "Inserts android:debuggable=\"true\" in to the application node of the\n"
             "manifest, making the application debuggable even on production devices.",
@@ -258,6 +260,7 @@
     AddOptionalSwitch("--strict-visibility",
         "Do not allow overlays with different visibility levels.",
         &options_.strict_visibility);
+    AddOptionalSwitch("-v", "Enables verbose logging.", &verbose_);
   }
 
   int Action(const std::vector<std::string>& args) override;