Use resource to specify 5-rows keyboard parameters

Change-Id: I67b290c4600dee43a81ba975ffc93a32a6d060b4
diff --git a/java/res/values-land/dimens.xml b/java/res/values-land/dimens.xml
index fbfbb51..ddf7f7f 100644
--- a/java/res/values-land/dimens.xml
+++ b/java/res/values-land/dimens.xml
@@ -53,9 +53,12 @@
     <fraction name="key_uppercase_letter_ratio">40%</fraction>
     <fraction name="key_preview_text_ratio">90%</fraction>
     <fraction name="spacebar_text_ratio">40.000%</fraction>
+    <dimen name="key_preview_offset">0.0dp</dimen>
+
+    <!-- For 5-rows keyboard -->
+    <fraction name="key_bottom_gap_5rows">3.20%p</fraction>
     <fraction name="key_letter_ratio_5rows">78%</fraction>
     <fraction name="key_uppercase_letter_ratio_5rows">48%</fraction>
-    <dimen name="key_preview_offset">0.0dp</dimen>
 
     <dimen name="key_preview_offset_ics">1.6dp</dimen>
     <!-- popup_key_height x -0.5 -->