[Interpreter] Add dispatch counters for each bytecode.

src/assembler.cc

Index: src/assembler.cc
diff --git a/src/assembler.cc b/src/assembler.cc
index 2f0b8805977771521aa4bfab070a77c4d3308bd4..1deedd176c83283e493d724d48440aa1724a7205 100644
--- a/src/assembler.cc
+++ b/src/assembler.cc
@@ -1069,6 +1069,12 @@ ExternalReference ExternalReference::interpreter_dispatch_table_address(
   return ExternalReference(isolate->interpreter()->dispatch_table_address());
 }
 
+ExternalReference ExternalReference::interpreter_handlers_dispatch_counters(
+    Isolate* isolate) {
+  return ExternalReference(
+      isolate->interpreter()->handlers_dispatch_counters());
+}
+
 ExternalReference::ExternalReference(StatsCounter* counter)
   : address_(reinterpret_cast<Address>(counter->GetInternalPointer())) {}