Everywhere: Rename {Deprecated => Byte}String

This commit un-deprecates DeprecatedString, and repurposes it as a byte
string.
As the null state has already been removed, there are no other
particularly hairy blockers in repurposing this type as a byte string
(what it _really_ is).

This commit is auto-generated:
  $ xs=$(ack -l \bDeprecatedString\b\|deprecated_string AK Userland \
    Meta Ports Ladybird Tests Kernel)
  $ perl -pie 's/\bDeprecatedString\b/ByteString/g;
    s/deprecated_string/byte_string/g' $xs
  $ clang-format --style=file -i \
    $(git diff --name-only | grep \.cpp\|\.h)
  $ gn format $(git ls-files '*.gn' '*.gni')

Userland/Libraries/LibIPC/Decoder.cpp

@@ -31,13 +31,13 @@ ErrorOr<String> decode(Decoder& decoder)
 }
 
 template<>
-ErrorOr<DeprecatedString> decode(Decoder& decoder)
+ErrorOr<ByteString> decode(Decoder& decoder)
 {
     auto length = TRY(decoder.decode_size());
     if (length == NumericLimits<u32>::max())
-        return DeprecatedString {};
+        return ByteString {};
     if (length == 0)
-        return DeprecatedString::empty();
+        return ByteString::empty();
 
     char* text_buffer = nullptr;
     auto text_impl = StringImpl::create_uninitialized(length, text_buffer);
@@ -45,7 +45,7 @@ ErrorOr<DeprecatedString> decode(Decoder& decoder)
     Bytes bytes { text_buffer, length };
     TRY(decoder.decode_into(bytes));
 
-    return DeprecatedString { *text_impl };
+    return ByteString { *text_impl };
 }
 
 template<>
@@ -65,7 +65,7 @@ ErrorOr<ByteBuffer> decode(Decoder& decoder)
 template<>
 ErrorOr<JsonValue> decode(Decoder& decoder)
 {
-    auto json = TRY(decoder.decode<DeprecatedString>());
+    auto json = TRY(decoder.decode<ByteString>());
     return JsonValue::from_string(json);
 }
 
@@ -86,7 +86,7 @@ ErrorOr<UnixDateTime> decode(Decoder& decoder)
 template<>
 ErrorOr<URL> decode(Decoder& decoder)
 {
-    auto url = TRY(decoder.decode<DeprecatedString>());
+    auto url = TRY(decoder.decode<ByteString>());
     return URL { url };
 }
 

Userland/Libraries/LibIPC/Decoder.h

@@ -7,8 +7,8 @@
 
 #pragma once
 
+#include <AK/ByteString.h>
 #include <AK/Concepts.h>
-#include <AK/DeprecatedString.h>
 #include <AK/Forward.h>
 #include <AK/NumericLimits.h>
 #include <AK/StdLibExtras.h>
@@ -85,7 +85,7 @@ template<>
 ErrorOr<String> decode(Decoder&);
 
 template<>
-ErrorOr<DeprecatedString> decode(Decoder&);
+ErrorOr<ByteString> decode(Decoder&);
 
 template<>
 ErrorOr<ByteBuffer> decode(Decoder&);

Userland/Libraries/LibIPC/Encoder.cpp

@@ -8,7 +8,7 @@
 
 #include <AK/BitCast.h>
 #include <AK/ByteBuffer.h>
-#include <AK/DeprecatedString.h>
+#include <AK/ByteString.h>
 #include <AK/JsonObject.h>
 #include <AK/JsonValue.h>
 #include <AK/NumericLimits.h>
@@ -65,7 +65,7 @@ ErrorOr<void> encode(Encoder& encoder, StringView const& value)
 }
 
 template<>
-ErrorOr<void> encode(Encoder& encoder, DeprecatedString const& value)
+ErrorOr<void> encode(Encoder& encoder, ByteString const& value)
 {
     return encoder.encode(value.view());
 }
@@ -99,7 +99,7 @@ ErrorOr<void> encode(Encoder& encoder, UnixDateTime const& value)
 template<>
 ErrorOr<void> encode(Encoder& encoder, URL const& value)
 {
-    return encoder.encode(value.to_deprecated_string());
+    return encoder.encode(value.to_byte_string());
 }
 
 template<>

Userland/Libraries/LibIPC/Encoder.h

@@ -114,7 +114,7 @@ template<>
 ErrorOr<void> encode(Encoder&, StringView const&);
 
 template<>
-ErrorOr<void> encode(Encoder&, DeprecatedString const&);
+ErrorOr<void> encode(Encoder&, ByteString const&);
 
 template<>
 ErrorOr<void> encode(Encoder&, ByteBuffer const&);

Userland/Libraries/LibIPC/MultiServer.h

@@ -16,7 +16,7 @@ namespace IPC {
 template<typename ConnectionFromClientType>
 class MultiServer {
 public:
-    static ErrorOr<NonnullOwnPtr<MultiServer>> try_create(Optional<DeprecatedString> socket_path = {})
+    static ErrorOr<NonnullOwnPtr<MultiServer>> try_create(Optional<ByteString> socket_path = {})
     {
         auto server = TRY(Core::LocalServer::try_create());
         TRY(server->take_over_from_system_server(socket_path.value_or({})));

Userland/Libraries/LibIPC/Stub.h

@@ -7,7 +7,7 @@
 
 #pragma once
 
-#include <AK/DeprecatedString.h>
+#include <AK/ByteString.h>
 #include <AK/OwnPtr.h>
 
 namespace AK {
@@ -24,14 +24,14 @@ public:
     virtual ~Stub() = default;
 
     virtual u32 magic() const = 0;
-    virtual DeprecatedString name() const = 0;
+    virtual ByteString name() const = 0;
     virtual ErrorOr<OwnPtr<MessageBuffer>> handle(Message const&) = 0;
 
 protected:
     Stub() = default;
 
 private:
-    DeprecatedString m_name;
+    ByteString m_name;
 };
 
 }