vector-based ICs did not update type feedback counts correctly.

src/ast.cc

Index: src/ast.cc
diff --git a/src/ast.cc b/src/ast.cc
index 60db9132104dcc09c63357e104d9adb8de537226..71bd839a62aa3fc742029f321eb0e50e34b3100e 100644
--- a/src/ast.cc
+++ b/src/ast.cc
@@ -64,7 +64,7 @@ VariableProxy::VariableProxy(Zone* zone, Variable* var, int position,
     : Expression(zone, position, 0, id_gen),
       raw_name_(var->raw_name()),
       interface_(var->interface()),
-      variable_feedback_slot_(FeedbackVectorSlot::Invalid()),
+      variable_feedback_slot_(FeedbackVectorICSlot::Invalid()),
       is_this_(var->is_this()),
       is_assigned_(false),
       is_resolved_(false) {
@@ -77,7 +77,7 @@ VariableProxy::VariableProxy(Zone* zone, const AstRawString* name, bool is_this,
     : Expression(zone, position, 0, id_gen),
       raw_name_(name),
       interface_(interface),
-      variable_feedback_slot_(FeedbackVectorSlot::Invalid()),
+      variable_feedback_slot_(FeedbackVectorICSlot::Invalid()),
       is_this_(is_this),
       is_assigned_(false),
       is_resolved_(false) {}