[wip] Add LiteralStringPiece which templatizes based on character length

base/strings/string_piece_unittest.cc

Index: base/strings/string_piece_unittest.cc
diff --git a/base/strings/string_piece_unittest.cc b/base/strings/string_piece_unittest.cc
index f05aa152b508be69b9f1e035371d4080f448f924..3e40178827b9a4e3a9ac43390931e0829fdb6dfb 100644
--- a/base/strings/string_piece_unittest.cc
+++ b/base/strings/string_piece_unittest.cc
@@ -688,4 +688,11 @@ TYPED_TEST(CommonStringPieceTest, CheckConstructors) {
   ASSERT_TRUE(empty == BasicStringPiece<TypeParam>(empty.begin(), empty.end()));
 }
 
+TEST(CommonStringPieceTest, LiteralStringPiece) {
+  StringPiece test_piece("test");
+  EXPECT_EQ(test_piece, LiteralStringPiece("test"));
+  const char test_ptr[] = "test";
+  EXPECT_EQ(test_piece, LiteralStringPiece(test_ptr));
+}
+
 }  // namespace base