Add counter for Accessors::ReconfigureToDataProperty

Calls to this method are currently being wrongly categorized as Blink C++
when it is cast to a GenericNamedPropertySetterCallback in
Object::GetPropertyWithAccessor and called.

Bug: 
Change-Id: I691346d0d1e6b22dfc12cf4cfb07cfff71a36baf
Reviewed-on: https://chromium-review.googlesource.com/585169Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Adithya Srinivasan <adithyas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46907}

src/accessors.cc

@@ -105,6 +105,8 @@ void Accessors::ReconfigureToDataProperty(
     v8::Local<v8::Name> key, v8::Local<v8::Value> val,
     const v8::PropertyCallbackInfo<v8::Boolean>& info) {
   i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate());
+  RuntimeCallTimerScope stats_scope(
+      isolate, &RuntimeCallStats::ReconfigureToDataProperty);
   HandleScope scope(isolate);
   Handle<Object> receiver = Utils::OpenHandle(*info.This());
   Handle<JSObject> holder =

src/counters.h

@@ -823,6 +823,7 @@ class RuntimeCallTimer final {
   V(PrototypeObject_DeleteProperty)                 \
   V(RecompileConcurrent)                            \
   V(RecompileSynchronous)                           \
+  V(ReconfigureToDataProperty)                      \
   V(TestCounter1)                                   \
   V(TestCounter2)                                   \
   V(TestCounter3)                                   \