[interpreter] Correctly thread through catch prediction.

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 db21c6b773ddcff39115960e7bfaf273004163cd..9fd4da63da00502cfe2901fa60618593db51d342 100644
--- a/src/interpreter/bytecode-generator.h
+++ b/src/interpreter/bytecode-generator.h
@@ -124,6 +124,10 @@ class BytecodeGenerator final : public AstVisitor {
   void RecordStoreToRegister(Register reg);
   Register LoadFromAliasedRegister(Register reg);
 
+  // Methods for tracking try-block nesting.
+  bool IsInsideTryCatch() const { return try_catch_nesting_level_ > 0; }
+  bool IsInsideTryFinally() const { return try_finally_nesting_level_ > 0; }
+
   inline void set_builder(BytecodeArrayBuilder* builder) { builder_ = builder; }
   inline BytecodeArrayBuilder* builder() const { return builder_; }
 
@@ -170,6 +174,8 @@ class BytecodeGenerator final : public AstVisitor {
   ContextScope* execution_context_;
   ExpressionResultScope* execution_result_;
   RegisterAllocationScope* register_allocator_;
+  int try_catch_nesting_level_;
+  int try_finally_nesting_level_;
 };
 
 }  // namespace interpreter