metrics: Add leak detector controller in Chrome OS metrics system

chrome/chrome_browser.gypi

 # Copyright 2012 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.
 
 {
   'variables': {
     # All .cc, .h, .m, and .mm files under browser except for:
     # * tests and mocks.
     # * code below browser/chromeos
     # * code below browser/extensions
@@ skipping 3608 matching lines @@
 
             # This file is generated by GRIT.
             '<(SHARED_INTERMEDIATE_DIR)/ui/chromeos/resources/grit/ui_chromeos_resources_map.cc',
           ],
           'dependencies': [
             'browser_chromeos',
             '../components/components.gyp:user_manager',
             '../ui/chromeos/ui_chromeos.gyp:ui_chromeos_resources',
           ],
         }],
+        ['chromeos==1', {
+          'sources': [
+            'browser/metrics/leak_detector_controller.cc',
+            'browser/metrics/leak_detector_controller.h',
+          ],
+          'dependencies': [
+            '../components/components.gyp:metrics_leak_detector',
+          ],
+        }],
         ['use_cups==1', {
           'dependencies': [
             '../printing/printing.gyp:cups',
           ],
         }],
         ['use_gnome_keyring==1', {
           'sources': [ '<@(chrome_browser_gnome_keyring_sources)' ],
           'dependencies': [
             '../build/linux/system.gyp:gnome_keyring',
           ],
@@ skipping 569 matching lines @@
             '../components/components.gyp:rlz',
             '../components/components.gyp:search_engines',
             '../rlz/rlz.gyp:rlz_lib',
             'common',
           ],
         },
       ],
     }],
   ],
 }