[interpreter] Implement support for the --trace flag.

src/interpreter/bytecode-generator.h

Index: src/interpreter/bytecode-generator.h
diff --git a/src/interpreter/bytecode-generator.h b/src/interpreter/bytecode-generator.h
index c738e0fafc52f582b4163ed783d69257a5e65b75..03067de08d47967c134cb23dd38f9b78ace8103f 100644
--- a/src/interpreter/bytecode-generator.h
+++ b/src/interpreter/bytecode-generator.h
@@ -105,6 +105,8 @@ class BytecodeGenerator final : public AstVisitor<BytecodeGenerator> {
   void VisitVariableAssignment(Variable* variable, Token::Value op,
                                FeedbackVectorSlot slot);
 
+  void BuildReturn();
+  void BuildReThrow();
   void BuildAbort(BailoutReason bailout_reason);
   void BuildThrowIfHole(Handle<String> name);
   void BuildThrowIfNotHole(Handle<String> name);