Revert "Revert "Fix key letter size of 5-rows Thai keyboard""

This reverts commit 7a5ca9982fae2c17df4e597d2c54c81782946ed1.
Depends: Ia4fa5046b3106e2710b9d5df1a6cc5f2cf995ec7

Change-Id: I0b9d0125380efe898943dc26ae884378145c44a3
diff --git a/java/res/values-land/dimens.xml b/java/res/values-land/dimens.xml
index 6259725..fbfbb51 100644
--- a/java/res/values-land/dimens.xml
+++ b/java/res/values-land/dimens.xml
@@ -53,6 +53,8 @@
     <fraction name="key_uppercase_letter_ratio">40%</fraction>
     <fraction name="key_preview_text_ratio">90%</fraction>
     <fraction name="spacebar_text_ratio">40.000%</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>