[Interpreter] Add support for Throw.

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 079327d99b2ff8a4b97bac01fc496bb34c711081..24d39c2938602c2c4bf5ca5a2656e9fe71149562 100644
--- a/src/interpreter/bytecode-array-builder.h
+++ b/src/interpreter/bytecode-array-builder.h
@@ -155,6 +155,8 @@ class BytecodeArrayBuilder {
   // than explicitly using them.
   BytecodeArrayBuilder& JumpIfToBooleanTrue(BytecodeLabel* label);
   BytecodeArrayBuilder& JumpIfToBooleanFalse(BytecodeLabel* label);
+
+  BytecodeArrayBuilder& Throw();
   BytecodeArrayBuilder& Return();
 
   BytecodeArrayBuilder& EnterBlock();
@@ -214,7 +216,7 @@ class BytecodeArrayBuilder {
   bool bytecode_generated_;
   size_t last_block_end_;
   size_t last_bytecode_start_;
-  bool return_seen_in_block_;
+  bool exit_seen_in_block_;
 
   IdentityMap<size_t> constants_map_;
   ZoneVector<Handle<Object>> constants_;