Detect seek penalties on Linux/ChromeOS.

chrome/chrome_browser.gypi

Index: chrome/chrome_browser.gypi
diff --git a/chrome/chrome_browser.gypi b/chrome/chrome_browser.gypi
index 59c8fa3367270ed6d2ca806a99cf507da05127ff..c648e40e507f8f7d2b5f42670c1e6f2c3dcc1949 100644
--- a/chrome/chrome_browser.gypi
+++ b/chrome/chrome_browser.gypi
@@ -1782,6 +1782,9 @@
       'browser/metrics/variations/variations_service.cc',
       'browser/metrics/variations/variations_service.h',
     ],
+    'chrome_browser_metrics_non_android_sources': [
+      'browser/metrics/drive_metrics_provider_linux.cc',
+    ],
     'chrome_browser_nacl_sources': [
       'browser/component_updater/pnacl/pnacl_component_installer.cc',
       'browser/component_updater/pnacl/pnacl_component_installer.h',
@@ -3179,6 +3182,11 @@
             '<@(chrome_browser_win_mac_sources)',
           ],
         }],
+        ['OS!="android"', {

[Lei Zhang, 2015/04/03 22:45:57]

GN

+          'sources': [
+            '<@(chrome_browser_metrics_non_android_sources)',
+          ],
+        }],
         ['OS!="android" and OS!="ios" and chromeos==0 and configuration_policy==1', {
           'sources': [
             'browser/net/disk_cache_dir_policy_handler.cc',