Add new snackbar features to prepare for omnibox geolocation snackbar.

chrome/android/java/res/values/dimens.xml

Index: chrome/android/java/res/values/dimens.xml
diff --git a/chrome/android/java/res/values/dimens.xml b/chrome/android/java/res/values/dimens.xml
index 0c086a6beb58c1279070902f538df95b51080c5e..2a96f4553afd9dd392c8ac9642c1b4570e0e8a0b 100644
--- a/chrome/android/java/res/values/dimens.xml
+++ b/chrome/android/java/res/values/dimens.xml
@@ -254,10 +254,10 @@
     <dimen name="recent_tabs_visible_separator_padding">8dp</dimen>
     <dimen name="recent_tabs_promo_padding">16dp</dimen>
 
-    <!-- Undo bar -->
-    <dimen name="undo_bar_height">48dp</dimen>
-    <dimen name="undo_bar_tablet_width">450dp</dimen>
-    <dimen name="undo_bar_tablet_margin">24dp</dimen>
+    <!-- Snackbars -->
+    <dimen name="snackbar_min_height">48dp</dimen>
+    <dimen name="snackbar_tablet_width">450dp</dimen>
+    <dimen name="snackbar_tablet_margin">24dp</dimen>
 
     <!-- Bookmarks widget dimensions -->
     <dimen name="widget_thumbnail_height">94dp</dimen>