Create libsampler as V8 sampler library.

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/mips.gni")
 import("//build/config/sanitizers/sanitizers.gni")
 
 if (is_android) {
@@ skipping 97 matching lines @@
   visibility = [ ":*" ]  # Only targets in this file can depend on this.
 
   include_dirs = [ "." ]
 }
 
 # This config should be applied to code using the libplatform.
 config("libplatform_config") {
   include_dirs = [ "include" ]
 }
 
+# This config should be applied to code using the libsampler.
+config("libsampler_config") {
+  include_dirs = [ "include" ]
+}
+
 # This config should only be applied to code using V8 and not any V8 code
 # itself.
 config("external_config") {
   if (is_component_build) {
     defines = [
       "V8_SHARED",
       "USING_V8_SHARED",
     ]
   }
   include_dirs = [ "include" ]
@@ skipping 1203 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/sampler.cc",
-    "src/profiler/sampler.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 463 matching lines @@
       "src/s390/simulator-s390.cc",
       "src/s390/simulator-s390.h",
     ]
   }
 
   configs = [ ":internal_config" ]
 
   defines = []
   deps = [
     ":v8_libbase",
+    ":v8_libsampler",
   ]
 
   if (is_win) {
     # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
     cflags = [ "/wd4267" ]
   }
 
   if (v8_enable_i18n_support) {
     deps += [ "//third_party/icu" ]
     if (is_win) {
@@ skipping 134 matching lines @@
 
   configs = [ ":internal_config_base" ]
 
   public_configs = [ ":libplatform_config" ]
 
   deps = [
     ":v8_libbase",
   ]
 }
 
+v8_source_set("v8_libsampler") {
+  sources = [
+    "src/libsampler/hashmap.h",
+    "src/libsampler/utils.h",
+    "src/libsampler/v8-sampler.cc",
+    "src/libsampler/v8-sampler.h",
+  ]
+
+  configs = [ ":internal_config_base" ]
+
+  public_configs = [ ":libsampler_config" ]
+
+  deps = [
+    ":v8_libbase",
+  ]
+}
+
 v8_source_set("fuzzer_support") {
   visibility = [ ":*" ]  # Only targets in this file can depend on this.
 
   sources = [
     "test/fuzzer/fuzzer-support.cc",
     "test/fuzzer/fuzzer-support.h",
   ]
 
   configs = [ ":internal_config_base" ]
 
@@ skipping 194 matching lines @@
   sources = [
     "test/fuzzer/wasm-asmjs.cc",
   ]
 
   deps = [
     ":fuzzer_support",
   ]
 
   configs = [ ":internal_config" ]
 }