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

components/components_tests.gyp

Index: components/components_tests.gyp
diff --git a/components/components_tests.gyp b/components/components_tests.gyp
index be10498c886e79062e5092ac867192358bfc15fe..9eddd4e163bda08e29eee3ca74b546f0a4874ce4 100644
--- a/components/components_tests.gyp
+++ b/components/components_tests.gyp
@@ -360,6 +360,13 @@
       'metrics/stability_metrics_helper_unittest.cc',
       'metrics/ui/screen_info_metrics_provider_unittest.cc',
     ],
+    'metrics_leak_detector_unittest_sources': [
+      'metrics/leak_detector/call_stack_manager_unittest.cc',
+      'metrics/leak_detector/call_stack_table_unittest.cc',
+      'metrics/leak_detector/leak_analyzer_unittest.cc',
+      'metrics/leak_detector/leak_detector_impl_unittest.cc',
+      'metrics/leak_detector/ranked_list_unittest.cc',
+    ],
     'mime_util_unittest_sources': [
       'mime_util/mime_util_unittest.cc',
     ],
@@ -1375,6 +1382,7 @@
             'wifi_sync/wifi_credential_unittest.cc',
             'wifi_sync/wifi_security_class_chromeos_unittest.cc',
             'wifi_sync/wifi_security_class_unittest.cc',
+            '<@(metrics_leak_detector_unittest_sources)',
             '<@(ownership_unittest_sources)',
           ],
           'sources!': [
@@ -1384,6 +1392,7 @@
           'dependencies': [
             '../chromeos/chromeos.gyp:chromeos_test_support',
             'components.gyp:arc',
+            'components.gyp:metrics_leak_detector',
             'components.gyp:ownership',
             'components.gyp:pairing',
             'components.gyp:user_manager_test_support',