[Media Engagement] Bootstrap preload v1.0.4.0

This adds MEIPreload version v1.0.4.0 to Chromium
so that it is boostrapped with new installs.

BUG=910647

Change-Id: I5b8128a7043b30610c3a62ea6c3f71adc96dbf89
Reviewed-on: https://chromium-review.googlesource.com/c/1357299Reviewed-by: Mounir Lamouri <mlamouri@chromium.org>
Commit-Queue: Becca Hughes <beccahughes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#613247}

chrome/browser/resources/media/mei_preload/manifest.json

 {
-  "description": "Contains preloaded data for Media Engagement", 
+  "name": "MEI Preload", 
   "icons": {}, 
-  "version": "1.0.3.0", 
+  "version": "1.0.4.0", 
   "manifest_version": 2, 
   "update_url": "https://clients2.google.com/service/update2/crx", 
-  "name": "MEI Preload"
+  "description": "Contains preloaded data for Media Engagement"
 }
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