Add the dummy implementation for turbofan unsupported port.

src/compiler/instruction-selector.cc

Index: src/compiler/instruction-selector.cc
diff --git a/src/compiler/instruction-selector.cc b/src/compiler/instruction-selector.cc
index ae73df853bce85b08a54207265cfb5d22cd74e9d..8b8f3c134e9f3c6b8216b4ade40595179ae71727 100644
--- a/src/compiler/instruction-selector.cc
+++ b/src/compiler/instruction-selector.cc
@@ -1212,6 +1212,14 @@ void InstructionSelector::VisitBranch(Node* branch, BasicBlock* tbranch,
 }
 
 
+void InstructionSelector::VisitSwitch(Node* node, BasicBlock* default_branch,
+                                      BasicBlock** case_branches,
+                                      int32_t* case_values, size_t case_count,
+                                      int32_t min_value, int32_t max_value) {
+  UNIMPLEMENTED();
+}
+
+
 // static
 MachineOperatorBuilder::Flags
 InstructionSelector::SupportedMachineOperatorFlags() {