[Interpreter] Add support for local context loads and stores.

test/unittests/interpreter/bytecode-array-iterator-unittest.cc

Index: test/unittests/interpreter/bytecode-array-iterator-unittest.cc
diff --git a/test/unittests/interpreter/bytecode-array-iterator-unittest.cc b/test/unittests/interpreter/bytecode-array-iterator-unittest.cc
index 9ed325f92ff2ee33d8bbaaa286e727cbb778b88b..e8a49579d7956ff9d7517fc3f024a494189064fd 100644
--- a/test/unittests/interpreter/bytecode-array-iterator-unittest.cc
+++ b/test/unittests/interpreter/bytecode-array-iterator-unittest.cc
@@ -25,6 +25,7 @@ TEST_F(BytecodeArrayIteratorTest, IteratesBytecodeArray) {
   BytecodeArrayBuilder builder(isolate(), zone());
   builder.set_parameter_count(3);
   builder.set_locals_count(2);
+  builder.set_context_count(0);
 
   Factory* factory = isolate()->factory();
   Handle<HeapObject> heap_num_0 = factory->NewHeapNumber(2.718);