metrics: Add leak detector controller in Chrome OS metrics system

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 84 matching lines @@
           },
         }],
         ['OS=="win"', {
           'sources!': [
             'metrics/machine_id_provider_stub.cc',
           ],
         }],
       ],
     },
     {
+      # GN version: //components/metrics:metrics_flags
+      'target_name': 'metrics_flags',
+      'includes': [
+        '../build/buildflag_header.gypi',
+        'metrics/leak_detector/leak_detector.gypi',
+      ],
+      'variables': {
+        'buildflag_header_path': 'metrics/metrics_flags.h',
+        'buildflag_flags': [ 'ENABLE_LEAK_DETECTOR=<(enable_leak_detector)' ],
+      },
+    },
+    {
       # GN version: //components/metrics:net
       'target_name': 'metrics_net',
       'type': 'static_library',
       'include_dirs': [
         '..',
       ],
       'dependencies': [
         '../base/base.gyp:base',
         '../net/net.gyp:net',
         '../url/url.gyp:url_lib',
@@ skipping 137 matching lines @@
           ],
           '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.cc',
+            'metrics/leak_detector/leak_detector.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',
           ],
         },
       ],
     }],
@@ skipping 51 matching lines @@
           ],
           'sources': [
             'metrics/profiler/ios/ios_tracking_synchronizer_delegate.cc',
             'metrics/profiler/ios/ios_tracking_synchronizer_delegate.h',
           ],
         },
       ],
     }],
   ],
 }