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

components/metrics.gypi

 # 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.
 
 {
   'targets': [
     {
       # GN version: //components/metrics
       'target_name': 'metrics',
       'type': 'static_library',
@@ skipping 222 matching lines @@
             'metrics/serialization/metric_sample.h',
             'metrics/serialization/serialization_utils.cc',
             'metrics/serialization/serialization_utils.h',
           ],
           'dependencies': [
             '../base/base.gyp:base',
           ],
         },
       ],
     }],
+    ['chromeos==1', {
+      'targets': [
+        {
+          # GN version: //components/metrics:leak_detector
+          'target_name': 'metrics_leak_detector',
+          'type': 'static_library',
+          'dependencies': [
+            '../base/base.gyp:base',
+          ],
+          'sources': [
+            'metrics/leak_detector/call_stack_manager.cc',
+            'metrics/leak_detector/call_stack_manager.h',
+            'metrics/leak_detector/call_stack_table.cc',
+            'metrics/leak_detector/call_stack_table.h',
+            'metrics/leak_detector/custom_allocator.cc',
+            'metrics/leak_detector/custom_allocator.h',
+            'metrics/leak_detector/leak_analyzer.cc',
+            'metrics/leak_detector/leak_analyzer.h',
+            'metrics/leak_detector/leak_detector_impl.cc',
+            'metrics/leak_detector/leak_detector_impl.h',
+            'metrics/leak_detector/leak_detector_value_type.cc',
+            'metrics/leak_detector/leak_detector_value_type.h',
+            'metrics/leak_detector/ranked_list.cc',
+            'metrics/leak_detector/ranked_list.h',
+          ],
+        },
+      ],
+    }],
     ['OS!="ios"', {
       'targets': [
         {
           # GN version: //components/metrics:gpu
           'target_name': 'metrics_gpu',
           'type': 'static_library',
           'include_dirs': [
             '..',
           ],
           'dependencies': [
@@ skipping 41 matching lines @@
           ],
           'sources': [
             'metrics/profiler/ios/ios_tracking_synchronizer_delegate.cc',
             'metrics/profiler/ios/ios_tracking_synchronizer_delegate.h',
           ],
         },
       ],
     }],
   ],
 }