Merge counters and v8-counters

BUILD.gn

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # TODO(jochen): These will need to be user-settable to support standalone V8
 # builds.
 v8_compress_startup_data = "off"
 v8_deprecation_warnings = false
 v8_enable_disassembler = false
 v8_enable_gdbjit = false
@@ skipping 571 matching lines @@
     "src/unicode-inl.h",
     "src/unicode.cc",
     "src/unicode.h",
     "src/unique.h",
     "src/uri.h",
     "src/utils-inl.h",
     "src/utils.cc",
     "src/utils.h",
     "src/utils/random-number-generator.cc",
     "src/utils/random-number-generator.h",
-    "src/v8-counters.cc",
-    "src/v8-counters.h",
     "src/v8.cc",
     "src/v8.h",
     "src/v8checks.h",
     "src/v8globals.h",
     "src/v8memory.h",
     "src/v8threads.cc",
     "src/v8threads.h",
     "src/variables.cc",
     "src/variables.h",
     "src/version.cc",
@@ skipping 262 matching lines @@
     ":v8_base",
     ":v8_nosnapshot",
   ]
 
   if (v8_compress_startup_data == "bz2") {
     libs = [ "bz2" ]
   }
 }
 
 }