mash: Provide a fake chromeos StatisticsProvider in ash

chromeos/chromeos.gyp

Index: chromeos/chromeos.gyp
diff --git a/chromeos/chromeos.gyp b/chromeos/chromeos.gyp
index 2c5f5bd4162e18f22c54f14687e87d92da4e1992..7bd5bb220544534401e0e70be9ac49b96921bf8b 100644
--- a/chromeos/chromeos.gyp
+++ b/chromeos/chromeos.gyp
@@ -363,6 +363,9 @@
       'settings/timezone_settings_helper.h',
       'system/devicetype.cc',
       'system/devicetype.h',
+      # Used when running mash, both on Linux and on real devices.

[Daniel Erat, 2016/09/01 21:07:09]

maybe put blank lines on either side of the block so it's clear what the comment
is referring to? (or perhaps this formatting is required)

i'd also be happy if this were only built for mash, but that may be harder to
do. :-)

[James Cook, 2016/09/01 21:21:41]

Blank lines added.

It turns out to be annoyingly difficult to make this only build for mash. We
don't have any global defines or build settings for mash. It's just another
build target. Chrome happens to launch the executable when you run chrome
--mash, but otherwise it's stock ash.

+      'system/fake_statistics_provider.cc',
+      'system/fake_statistics_provider.h',
       'system/name_value_pairs_parser.cc',
       'system/name_value_pairs_parser.h',
       'system/statistics_provider.cc',
@@ -563,8 +566,6 @@
         'network/mock_network_device_handler.h',
         'network/onc/onc_test_utils.cc',
         'network/onc/onc_test_utils.h',
-        'system/fake_statistics_provider.cc',
-        'system/fake_statistics_provider.h',
       ],
       'include_dirs': [
         '..',