[Interpreter] Add support for Throw.

src/interpreter/interpreter.cc

Index: src/interpreter/interpreter.cc
diff --git a/src/interpreter/interpreter.cc b/src/interpreter/interpreter.cc
index 2b3171f31f8f1a1bd0762227101aeb814794acd7..c835adaf05527720820a687597597b41b8d82ac4 100644
--- a/src/interpreter/interpreter.cc
+++ b/src/interpreter/interpreter.cc
@@ -887,6 +887,17 @@ void Interpreter::DoCreateClosure(compiler::InterpreterAssembler* assembler) {
 }
 
 
+// Throw
+//
+// Throws the exception in the accumulator.
+void Interpreter::DoThrow(compiler::InterpreterAssembler* assembler) {
+  Node* exception = __ GetAccumulator();
+  __ CallRuntime(Runtime::kThrow, exception);
+  // We shouldn't ever return from a throw.
+  __ Abort(kUnexpectedReturnFromThrow);
+}
+
+
 // Return
 //
 // Return the value in the accumulator.