metrics: Add leak detector controller in Chrome OS metrics system

chrome/test/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/allocator.gni")
 import("//build/config/chrome_build.gni")
 import("//build/config/compiler/compiler.gni")
 import("//build/config/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//chrome/chrome_tests.gni")
 import("//chrome/test/base/js2gtest.gni")
 import("//testing/test.gni")
 
 if (is_android) {
@@ skipping 1856 matching lines @@
             ".",
             "//chrome")
   }
   if (is_chromeos) {
     deps += [
       "//chrome/browser/chromeos:unit_tests",
       "//chromeos/ime:gencode",
     ]
     sources -= [ "../browser/signin/signin_manager_unittest.cc" ]
   }
+  if (is_chromeos && enable_leak_detector) {
+    sources += [ "../browser/metrics/leak_detector_controller_unittest.cc" ]
+  }
   if (use_x11) {
     deps += [ "//ui/events/devices" ]
     data_deps += [ "//tools/xdisplaycheck" ]
   } else {
     sources -= [ "../browser/password_manager/password_store_x_unittest.cc" ]
   }
   if (cld_version == 2) {
     # Unit tests should be independent of the CLD2 access mechanism, just use
     # static for simplicity.
     deps += [ "//third_party/cld_2:cld2_static" ]
@@ skipping 332 matching lines @@
 if (is_android) {
   android_library("unit_tests_java") {
     DEPRECATED_java_in_dir = "//chrome/test/android/unit_tests_apk/src"
     deps = [
       "//base:base_java",
       "//chrome/android:chrome_java",
       "//content/public/android:content_java",
     ]
   }
 }