Move //components/metrics/compression_utils into standalone component

This file is used by code in //chrome/browser/metrics/variations that itself is
slated for componentization. As //components/metrics depends on
//components/variations, the code in question would not be able to be
componentized into //components/variations. To enable that, this CL moves
compression_utils* to a standalone lower-level component.

BUG=516662, 515695
TBR=agl

Review URL: https://codereview.chromium.org/1304563003

Cr-Commit-Position: refs/heads/master@{#345309}
diff --git a/chrome/browser/DEPS b/chrome/browser/DEPS
index 640f9b90..753c683 100644
--- a/chrome/browser/DEPS
+++ b/chrome/browser/DEPS
@@ -26,6 +26,7 @@
   "+components/cdm/browser",
   "+components/cloud_devices/common",
   "+components/component_updater",
+  "+components/compression",
   "+components/content_settings",
   "+components/copresence",
   "+components/crash",