[Interpreter] Add support for cast operators to bytecode graph builder and

src/interpreter/bytecode-array-builder.h

Index: src/interpreter/bytecode-array-builder.h
diff --git a/src/interpreter/bytecode-array-builder.h b/src/interpreter/bytecode-array-builder.h
index d9b3a566fc4828b5131664dc53254cffeb893204..acd7138cfcd5c55b3e52269d8410a73b3cd14785 100644
--- a/src/interpreter/bytecode-array-builder.h
+++ b/src/interpreter/bytecode-array-builder.h
@@ -79,6 +79,7 @@ class BytecodeArrayBuilder {
   BytecodeArrayBuilder& LoadTheHole();
   BytecodeArrayBuilder& LoadTrue();
   BytecodeArrayBuilder& LoadFalse();
+  BytecodeArrayBuilder& LoadBooleanConstant(bool value);
 
   // Global loads to the accumulator and stores from the accumulator.
   BytecodeArrayBuilder& LoadGlobal(size_t name_index, int feedback_slot,
@@ -286,6 +287,7 @@ class BytecodeArrayBuilder {
 
   ZoneSet<int> free_temporaries_;
 
+  class PreviousBytecodeHelper;
   friend class TemporaryRegisterScope;
   DISALLOW_COPY_AND_ASSIGN(BytecodeArrayBuilder);
 };