Refactor CpuProfiler.

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.
 
 import("//build/config/android/config.gni")
 import("//build/config/arm.gni")
 import("//build/config/dcheck_always_on.gni")
 import("//build/config/mips.gni")
 import("//build/config/sanitizers/sanitizers.gni")
 
@@ skipping 1337 matching lines @@
     "src/profiler/cpu-profiler.cc",
     "src/profiler/cpu-profiler.h",
     "src/profiler/heap-profiler.cc",
     "src/profiler/heap-profiler.h",
     "src/profiler/heap-snapshot-generator-inl.h",
     "src/profiler/heap-snapshot-generator.cc",
     "src/profiler/heap-snapshot-generator.h",
     "src/profiler/profile-generator-inl.h",
     "src/profiler/profile-generator.cc",
     "src/profiler/profile-generator.h",
+    "src/profiler/profiler-listener.cc",
+    "src/profiler/profiler-listener.h",
     "src/profiler/sampling-heap-profiler.cc",
     "src/profiler/sampling-heap-profiler.h",
     "src/profiler/strings-storage.cc",
     "src/profiler/strings-storage.h",
     "src/profiler/tick-sample.cc",
     "src/profiler/tick-sample.h",
     "src/profiler/unbound-queue-inl.h",
     "src/profiler/unbound-queue.h",
     "src/property-descriptor.cc",
     "src/property-descriptor.h",
@@ skipping 925 matching lines @@
 
   deps = [
     ":fuzzer_support",
   ]
 
   configs = [ ":internal_config" ]
 }
 
 v8_fuzzer("wasm_asmjs_fuzzer") {
 }