Consolidate serialization code in base::HistogramDeltasSerializer
Before patch code lived partially in base/ and content/

BUG=305019

Review URL: https://codereview.chromium.org/27460003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@230268 0039d316-1c4b-4281-b951-d872f2087c98


CrOS-Libchrome-Original-Commit: 6afa90f099caff72d87cac655fe49f6099a73f83
diff --git a/base/base.gypi b/base/base.gypi
index 73e6ccc..b60ffa6 100644
--- a/base/base.gypi
+++ b/base/base.gypi
@@ -339,6 +339,8 @@
           'metrics/histogram.h',
           'metrics/histogram_base.cc',
           'metrics/histogram_base.h',
+          'metrics/histogram_delta_serialization.cc',
+          'metrics/histogram_delta_serialization.h',
           'metrics/histogram_flattener.h',
           'metrics/histogram_samples.cc',
           'metrics/histogram_samples.h',