Make StringPiece to be std::string_view alias

Bug: 237583012
Test: build + boot + UTs

Change-Id: I849831f4466d3b9c7ec842b75256e7fcba77a0c0
diff --git a/tools/aapt2/util/Util_test.cpp b/tools/aapt2/util/Util_test.cpp
index 4ebcb11..15135690 100644
--- a/tools/aapt2/util/Util_test.cpp
+++ b/tools/aapt2/util/Util_test.cpp
@@ -84,6 +84,14 @@
   ASSERT_THAT(*iter, Eq(StringPiece()));
 }
 
+TEST(UtilTest, TokenizeNone) {
+  auto tokenizer = util::Tokenize(StringPiece("none"), '.');
+  auto iter = tokenizer.begin();
+  ASSERT_THAT(*iter, Eq("none"));
+  ++iter;
+  ASSERT_THAT(iter, Eq(tokenizer.end()));
+}
+
 TEST(UtilTest, IsJavaClassName) {
   EXPECT_TRUE(util::IsJavaClassName("android.test.Class"));
   EXPECT_TRUE(util::IsJavaClassName("android.test.Class$Inner"));