Tidy up 10-9-7 7-inch tablet layouts

* Slightly smaller key width and larger shift key and space key.
* Both left and right shift key has the same width.
* Move the 2nd-row slight right.

Bug: 6422448
Change-Id: If27028eaac20c503c352ba35dd156befc53918c7
diff --git a/java/res/xml-sw600dp/row_qwerty4.xml b/java/res/xml-sw600dp/row_qwerty4.xml
index a41dc64..5008696 100644
--- a/java/res/xml-sw600dp/row_qwerty4.xml
+++ b/java/res/xml-sw600dp/row_qwerty4.xml
@@ -22,22 +22,22 @@
     xmlns:latin="http://schemas.android.com/apk/res/com.android.inputmethod.latin"
 >
     <Row
-        latin:keyWidth="8.9%p"
+        latin:keyWidth="8.5%p"
     >
         <Key
             latin:keyStyle="toSymbolKeyStyle"
-            latin:keyWidth="13.0%p" />
+            latin:keyWidth="11.75%p" />
         <include
             latin:keyboardLayout="@xml/keys_f1f2" />
         <include
-            latin:keyXPos="30.750%p"
+            latin:keyXPos="28.75%p"
             latin:keyboardLayout="@xml/key_space" />
         <include
             latin:keyboardLayout="@xml/key_apostrophe" />
         <include
             latin:keyboardLayout="@xml/key_dash" />
         <include
-            latin:keyXPos="-10.00%p"
+            latin:keyXPos="-8.5%p"
             latin:keyWidth="fillRight"
             latin:keyboardLayout="@xml/key_shortcut" />
     </Row>