Make buttons of bottom bars match spec.

Bug: 36307379
Change-Id: I8384469c250ad3389d8e3e9ee651c043dd8cdbd3
diff --git a/res/values/dimens.xml b/res/values/dimens.xml
index c7a473e..59cc494 100644
--- a/res/values/dimens.xml
+++ b/res/values/dimens.xml
@@ -62,4 +62,11 @@
     <dimen name="fastscroll_default_thickness">8dp</dimen>
     <dimen name="fastscroll_minimum_range">50dp</dimen>
     <dimen name="fastscroll_margin">0dp</dimen>
+
+    <dimen name="bottom_bar_height">56dp</dimen>
+    <dimen name="bottom_bar_padding_end">10dp</dimen>
+    <dimen name="bottom_bar_negative_button_width">88.5dp</dimen>
+    <dimen name="bottom_bar_positive_button_margin_start">8dp</dimen>
+    <dimen name="bottom_bar_positive_button_width">73dp</dimen>
+    <dimen name="bottom_bar_positive_button_elevation">2dp</dimen>
 </resources>