Ensure embedder timeline callbacks are called for service protocol requests

runtime/platform/text_buffer.h

Index: runtime/platform/text_buffer.h
diff --git a/runtime/platform/text_buffer.h b/runtime/platform/text_buffer.h
index f8f0c2fcc8c233b493ee2f91903b80dc950d8afc..1908ecb05cf6908269c7629b6928dceddbbf5dcb 100644
--- a/runtime/platform/text_buffer.h
+++ b/runtime/platform/text_buffer.h
@@ -23,6 +23,8 @@ class TextBuffer : ValueObject {
   void EscapeAndAddCodeUnit(uint32_t cu);
   void AddString(const char* s);
   void AddEscapedString(const char* s);
+  void AddRaw(const uint8_t* buffer,
+              intptr_t buffer_length);
 
   void Clear();