Remove unused parsing related histograms.

src/counters.h

 // 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.
 
 #ifndef V8_COUNTERS_H_
 #define V8_COUNTERS_H_
 
 #include "include/v8.h"
 #include "src/allocation.h"
 #include "src/base/platform/elapsed-timer.h"
@@ skipping 845 matching lines @@
   HT(gc_context, V8.GCContext, 10000,                                          \
      MILLISECOND) /* GC context cleanup time */                                \
   HT(gc_idle_notification, V8.GCIdleNotification, 10000, MILLISECOND)          \
   HT(gc_incremental_marking, V8.GCIncrementalMarking, 10000, MILLISECOND)      \
   HT(gc_incremental_marking_start, V8.GCIncrementalMarkingStart, 10000,        \
      MILLISECOND)                                                              \
   HT(gc_incremental_marking_finalize, V8.GCIncrementalMarkingFinalize, 10000,  \
      MILLISECOND)                                                              \
   HT(gc_low_memory_notification, V8.GCLowMemoryNotification, 10000,            \
      MILLISECOND)                                                              \
-  /* Parsing timers. */                                                        \
-  HT(parse, V8.ParseMicroSeconds, 1000000, MICROSECOND)                        \
-  HT(parse_lazy, V8.ParseLazyMicroSeconds, 1000000, MICROSECOND)               \
-  HT(pre_parse, V8.PreParseMicroSeconds, 1000000, MICROSECOND)                 \
   /* Compilation times. */                                                     \
   HT(compile, V8.CompileMicroSeconds, 1000000, MICROSECOND)                    \
   HT(compile_eval, V8.CompileEvalMicroSeconds, 1000000, MICROSECOND)           \
   /* Serialization as part of compilation (code caching) */                    \
   HT(compile_serialize, V8.CompileSerializeMicroSeconds, 100000, MICROSECOND)  \
   HT(compile_deserialize, V8.CompileDeserializeMicroSeconds, 1000000,          \
      MICROSECOND)                                                              \
   /* Total compilation time incl. caching/parsing */                           \
   HT(compile_script, V8.CompileScriptMicroSeconds, 1000000, MICROSECOND)       \
   /* Total JavaScript execution time (including callbacks and runtime calls */ \
@@ skipping 392 matching lines @@
   }
 
   Isolate* isolate_ = nullptr;
   RuntimeCallTimer timer_;
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COUNTERS_H_