Apply the modern layout to the NTP.

These are visual changes in color, spacing, and position.
This change does not affect what data is shown, e.g. the
NTP will continue to show the "Recent bookmarks" and
"Downloads" sections.

Screenshots: http://shortn/_0SU7JgKkfU
9patch asset masters: http://shortn/_zUTmPSJknm

Bug: 788342
Change-Id: I4290f4c12a2e4fe9803496620af48f9b273023e3
Reviewed-on: https://chromium-review.googlesource.com/788371
Commit-Queue: Michael van Ouwerkerk <[email protected]>
Reviewed-by: Bernhard Bauer <[email protected]>
Cr-Commit-Position: refs/heads/master@{#519114}
diff --git a/chrome/browser/about_flags.cc b/chrome/browser/about_flags.cc
index 37de2623..83ec57f 100644
--- a/chrome/browser/about_flags.cc
+++ b/chrome/browser/about_flags.cc
@@ -2550,6 +2550,9 @@
          chrome::android::kNTPCondensedTileLayoutFeature,
          kNTPCondensedTileLayoutFeatureVariations,
          chrome::android::kNTPCondensedTileLayoutFeature.name)},
+    {"ntp-modern-layout", flag_descriptions::kNtpModernLayoutName,
+     flag_descriptions::kNtpModernLayoutDescription, kOsAndroid,
+     FEATURE_VALUE_TYPE(chrome::android::kNTPModernLayoutFeature)},
     {"enable-site-exploration-ui", flag_descriptions::kSiteExplorationUiName,
      flag_descriptions::kSiteExplorationUiDescription, kOsAndroid,
      FEATURE_VALUE_TYPE(ntp_tiles::kSiteExplorationUiFeature)},