[profiler] Add CodeEvent entries for RCS counters statically on profiler start.

src/counters.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/counters.h"
 
 #include <iomanip>
 
 #include "src/base/platform/platform.h"
 #include "src/isolate.h"
@@ skipping 306 matching lines @@
 #undef CALL_BUILTIN_COUNTER
 #define CALL_BUILTIN_COUNTER(name) &RuntimeCallStats::API_##name,
     FOR_EACH_API_COUNTER(CALL_BUILTIN_COUNTER)  //
 #undef CALL_BUILTIN_COUNTER
 #define CALL_BUILTIN_COUNTER(name) &RuntimeCallStats::Handler_##name,
     FOR_EACH_HANDLER_COUNTER(CALL_BUILTIN_COUNTER)
 #undef CALL_BUILTIN_COUNTER
 };
 
 // static
+const int RuntimeCallStats::counters_count =
+    arraysize(RuntimeCallStats::counters);
+
+// static
 void RuntimeCallStats::Enter(RuntimeCallStats* stats, RuntimeCallTimer* timer,
                              CounterId counter_id) {
   RuntimeCallCounter* counter = &(stats->*counter_id);
   DCHECK(counter->name() != nullptr);
   timer->Start(counter, stats->current_timer_.Value());
   stats->current_timer_.SetValue(timer);
 }
 
 // static
 void RuntimeCallStats::Leave(RuntimeCallStats* stats, RuntimeCallTimer* timer) {
@@ skipping 66 matching lines @@
        RuntimeCallStats::counters) {
     RuntimeCallCounter* counter = &(this->*counter_id);
     if (counter->count() > 0) counter->Dump(value);
   }
 
   in_use_ = false;
 }
 
 }  // namespace internal
 }  // namespace v8