Consolidate KeyboardView.keyLetterSize and keyLetterRatio

This change also consolidates keyboardView.keyLabelSize and
keyLabelRatio.

Change-Id: I4a45bcb6e7fc104ae4a9ae3ecdae9842d813840e
diff --git a/java/res/values/styles.xml b/java/res/values/styles.xml
index ccf378a..0220c83 100644
--- a/java/res/values/styles.xml
+++ b/java/res/values/styles.xml
@@ -35,9 +35,9 @@
     <style name="KeyboardView">
         <item name="android:background">@drawable/keyboard_background</item>
         <item name="keyBackground">@drawable/btn_keyboard_key</item>
-        <item name="keyLetterRatio">@fraction/key_letter_ratio</item>
+        <item name="keyLetterSize">@fraction/key_letter_ratio</item>
         <item name="keyLargeLetterRatio">@fraction/key_large_letter_ratio</item>
-        <item name="keyLabelRatio">@fraction/key_label_ratio</item>
+        <item name="keyLabelSize">@fraction/key_label_ratio</item>
         <item name="keyLargeLabelRatio">@fraction/key_large_label_ratio</item>
         <item name="keyHintLetterRatio">@fraction/key_hint_letter_ratio</item>
         <item name="keyHintLabelRatio">@fraction/key_hint_label_ratio</item>