Chromecast: adds handler to log metrics from external processes.

chromecast/chromecast.gyp

 # 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.
 
 {
   'variables': {
     'android_support_v13_target%':
         '../third_party/android_tools/android_tools.gyp:android_support_v13_javalib',
     'chromium_code': 1,
     'chromecast_branding%': 'Chromium',
@@ skipping 181 matching lines @@
                 'browser/service/cast_service_android.h',
               ],
             }, {
               'sources': [
                 'browser/service/cast_service_simple.cc',
                 'browser/service/cast_service_simple.h',
               ],
             }],
           ],
         }],
+        # ExternalMetrics not necessary on Android and (as of this writing) uses
+        # non-portable filesystem operations. Also webcrypto is not used on
+        # Android either.
+        ['OS=="linux"', {
+          'sources': [
+            'browser/metrics/external_metrics.cc',
+            'browser/metrics/external_metrics.h',
+          ],
+          'dependencies': [
+            '../components/components.gyp:metrics_serialization',
+          ],
+        }],
       ],
     },
     {
       'target_name': 'cast_shell_unittests',
       'type': '<(gtest_target_type)',
       'dependencies': [
         'cast_shell_common',
         '../base/base.gyp:base_prefs_test_support',
         '../base/base.gyp:run_all_unittests',
         '../base/base.gyp:test_support_base',
@@ skipping 250 matching lines @@
           'sources': [
             'browser/test/chromecast_browser_test.cc',
             'browser/test/chromecast_browser_test.h',
             'browser/test/chromecast_browser_test_runner.cc',
           ],
         },
       ],  # end of targets
     }],
   ],  # end of conditions
 }