Reland of: components/metrics: Add runtime memory leak detector

components/metrics/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.
 
 # GYP version: components/metrics.gypi:metrics
 source_set("metrics") {
   sources = [
     "call_stack_profile_metrics_provider.cc",
     "call_stack_profile_metrics_provider.h",
     "clean_exit_beacon.cc",
@@ skipping 93 matching lines @@
       ":metrics",
     ]
     deps = [
       "//base",
       "//content/public/browser",
       "//gpu/config",
     ]
   }
 }
 
+if (is_chromeos) {
+  # GYP version: components/metrics.gypi:metrics_leak_detector
+  source_set("leak_detector") {
+    sources = [
+      "leak_detector/call_stack_manager.cc",
+      "leak_detector/call_stack_manager.h",
+      "leak_detector/call_stack_table.cc",
+      "leak_detector/call_stack_table.h",
+      "leak_detector/custom_allocator.cc",
+      "leak_detector/custom_allocator.h",
+      "leak_detector/leak_analyzer.cc",
+      "leak_detector/leak_analyzer.h",
+      "leak_detector/leak_detector_impl.cc",
+      "leak_detector/leak_detector_impl.h",
+      "leak_detector/leak_detector_value_type.cc",
+      "leak_detector/leak_detector_value_type.h",
+      "leak_detector/ranked_list.cc",
+      "leak_detector/ranked_list.h",
+    ]
+
+    deps = [
+      "//base",
+    ]
+  }
+}
+
 # GYP version: components/metrics.gypi:metrics_net
 static_library("net") {
   sources = [
     "net/net_metrics_log_uploader.cc",
     "net/net_metrics_log_uploader.h",
     "net/network_metrics_provider.cc",
     "net/network_metrics_provider.h",
     "net/version_utils.cc",
     "net/version_utils.h",
     "net/wifi_access_point_info_provider.cc",
@@ skipping 110 matching lines @@
       "serialization/metric_sample.h",
       "serialization/serialization_utils.cc",
       "serialization/serialization_utils.h",
     ]
     deps = [
       "//base",
     ]
   }
 }
 
+if (is_chromeos) {
+  source_set("leak_detector_unit_tests") {
+    testonly = true
+    sources = [
+      "leak_detector/call_stack_manager_unittest.cc",
+      "leak_detector/call_stack_table_unittest.cc",
+      "leak_detector/leak_analyzer_unittest.cc",
+      "leak_detector/leak_detector_impl_unittest.cc",
+      "leak_detector/ranked_list_unittest.cc",
+    ]
+
+    deps = [
+      ":leak_detector",
+      "//base",
+      "//testing/gtest",
+    ]
+  }
+}
+
 source_set("unit_tests") {
   testonly = true
   sources = [
     "call_stack_profile_metrics_provider_unittest.cc",
     "cloned_install_detector_unittest.cc",
     "daily_event_unittest.cc",
     "drive_metrics_provider_unittest.cc",
     "histogram_encoder_unittest.cc",
     "machine_id_provider_win_unittest.cc",
     "metrics_hashes_unittest.cc",
@@ skipping 19 matching lines @@
     "//base:prefs_test_support",
     "//base/test:test_support",
     "//components/variations",
     "//testing/gtest",
   ]
 
   if (is_linux) {
     sources += [ "serialization/serialization_utils_unittest.cc" ]
     deps += [ ":serialization" ]
   }
+
+  if (is_chromeos) {
+    deps += [ ":leak_detector_unit_tests" ]
+  }
 }
 # TODO(GYP): metrics_chromeos