Track code cache reject reason via histogram buckets.

src/counters.h

Index: src/counters.h
diff --git a/src/counters.h b/src/counters.h
index c1da5708ba854b55bbbd592e53484f1409f4cc8f..8e7c9e7ff2dd615aa9cd51cc5b01d8b653e5548c 100644
--- a/src/counters.h
+++ b/src/counters.h
@@ -362,7 +362,9 @@ class AggregatedHistogramTimerScope {
   /* Generic range histograms */                                              \
   HR(gc_idle_time_allotted_in_ms, V8.GCIdleTimeAllottedInMS, 0, 10000, 101)   \
   HR(gc_idle_time_limit_overshot, V8.GCIdleTimeLimit.Overshot, 0, 10000, 101) \
-  HR(gc_idle_time_limit_undershot, V8.GCIdleTimeLimit.Undershot, 0, 10000, 101)
+  HR(gc_idle_time_limit_undershot, V8.GCIdleTimeLimit.Undershot, 0, 10000,    \
+     101)                                                                     \
+  HR(code_cache_reject_reason, V8.CodeCacheRejectReason, 1, 6, 6)
 
 #define HISTOGRAM_TIMER_LIST(HT)                                              \
   /* Garbage collection timers. */                                            \