[Interpreter] Add wide context slot load / store operations.

src/interpreter/interpreter.cc

Index: src/interpreter/interpreter.cc
diff --git a/src/interpreter/interpreter.cc b/src/interpreter/interpreter.cc
index 01e80583599c631276e5ae2f64d59c316cfa3c1c..574602b0ed833add1261b02595de049b1bb9c805 100644
--- a/src/interpreter/interpreter.cc
+++ b/src/interpreter/interpreter.cc
@@ -433,6 +433,15 @@ void Interpreter::DoLdaContextSlot(compiler::InterpreterAssembler* assembler) {
 }
 
 
+// LdaContextSlotWide <context> <slot_index>
+//
+// Load the object in |slot_index| of |context| into the accumulator.
+void Interpreter::DoLdaContextSlotWide(
+    compiler::InterpreterAssembler* assembler) {
+  DoLdaContextSlot(assembler);
+}
+
+
 // StaContextSlot <context> <slot_index>
 //
 // Stores the object in the accumulator into |slot_index| of |context|.
@@ -446,6 +455,15 @@ void Interpreter::DoStaContextSlot(compiler::InterpreterAssembler* assembler) {
 }
 
 
+// StaContextSlot <context> <slot_index>
+//
+// Stores the object in the accumulator into |slot_index| of |context|.
+void Interpreter::DoStaContextSlotWide(
+    compiler::InterpreterAssembler* assembler) {
+  DoStaContextSlot(assembler);
+}
+
+
 void Interpreter::DoLoadLookupSlot(Runtime::FunctionId function_id,
                                    compiler::InterpreterAssembler* assembler) {
   Node* index = __ BytecodeOperandIdx(0);