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

src/compiler/bytecode-graph-builder.cc

Index: src/compiler/bytecode-graph-builder.cc
diff --git a/src/compiler/bytecode-graph-builder.cc b/src/compiler/bytecode-graph-builder.cc
index b0af5749fe935b67420dfc3619599cd83540a38e..24443978e2701dde1a6ad889ea42b3d2266153d4 100644
--- a/src/compiler/bytecode-graph-builder.cc
+++ b/src/compiler/bytecode-graph-builder.cc
@@ -267,6 +267,12 @@ void BytecodeGraphBuilder::VisitLdaContextSlot(
 }
 
 
+void BytecodeGraphBuilder::VisitStaContextSlot(
+    const interpreter::BytecodeArrayIterator& iterator) {
+  UNIMPLEMENTED();
+}
+
+
 void BytecodeGraphBuilder::VisitLoadICSloppy(
     const interpreter::BytecodeArrayIterator& iterator) {
   UNIMPLEMENTED();