Snackbar for promoting Data Saver to existing users

chrome/android/java/strings/android_chrome_strings.grd

Index: chrome/android/java/strings/android_chrome_strings.grd
diff --git a/chrome/android/java/strings/android_chrome_strings.grd b/chrome/android/java/strings/android_chrome_strings.grd
index b212a68e0ee4a904b4293bbc7ea1ef5cc1133e9b..fd3df3ff7bf5ffb133e36b60b602687c16209e27 100644
--- a/chrome/android/java/strings/android_chrome_strings.grd
+++ b/chrome/android/java/strings/android_chrome_strings.grd
@@ -888,6 +888,15 @@ To obtain new licenses, connect to the internet and play your downloaded content
       <message name="IDS_DATA_REDUCTION_PROMO_INFOBAR_BUTTON" desc="Text to be displayed in the data reduction promo infobar confirm button">
         Turn on Data Saver
       </message>
+      <message name="IDS_DATA_REDUCTION_PROMO_SNACKBAR_TEXT_MB" desc="Text to be displayed in the data reduction promo snackbar that lets the user know they saved a certain amount of data in MB">
+        Chrome just saved you <ph name="megabytes">%1$d<ex>100</ex></ph> MB
+      </message>
+      <message name="IDS_DATA_REDUCTION_PROMO_SNACKBAR_TEXT_GB" desc="Text to be displayed in the data reduction promo snackbar that lets the user know they saved a certain amount of data in GB">
+        Chrome just saved you <ph name="gigabytes">%1$d<ex>10</ex></ph> GB
+      </message>
+      <message name="IDS_DATA_REDUCTION_PROMO_SNACKBAR_BUTTON" desc="Text to be displayed in the data reduction promo snackbar view button that takes the user to the data reduction settings page">
+        View
+      </message>
 
       <!-- About Chrome preferences -->
       <message name="IDS_PREFS_ABOUT_CHROME" desc="Title for the About Chrome page. [CHAR-LIMIT=32]">