Convert one letter Key.outputText to Key.code

This change also uses Key.code instead of Key.outputText for the
variety of parentheses keys taht introduced by I85998f17.

Bug: 5975484
Change-Id: I86879c9942d264edc71e5893325a2f582763d12f
diff --git a/java/res/xml/keys_curly_brackets.xml b/java/res/xml/keys_curly_brackets.xml
index b43fbb1..d21a092 100644
--- a/java/res/xml/keys_curly_brackets.xml
+++ b/java/res/xml/keys_curly_brackets.xml
@@ -23,8 +23,8 @@
 >
     <Key
         latin:keyLabel="{"
-        latin:keyOutputText="@string/output_text_for_left_curly_bracket" />
+        latin:code="@integer/keycode_for_left_curly_bracket" />
     <Key
         latin:keyLabel="}"
-        latin:keyOutputText="@string/output_text_for_right_curly_bracket" />
+        latin:code="@integer/keycode_for_right_curly_bracket" />
 </merge>
diff --git a/java/res/xml/keys_less_greater.xml b/java/res/xml/keys_less_greater.xml
index 8e90199..8961d9c 100644
--- a/java/res/xml/keys_less_greater.xml
+++ b/java/res/xml/keys_less_greater.xml
@@ -23,10 +23,10 @@
 >
     <Key
         latin:keyLabel="&lt;"
-        latin:keyOutputText="@string/output_text_for_less_than"
+        latin:code="@integer/keycode_for_less_than"
         latin:moreKeys="@string/more_keys_for_less_than" />
     <Key
         latin:keyLabel="&gt;"
-        latin:keyOutputText="@string/output_text_for_greater_than"
+        latin:code="@integer/keycode_for_greater_than"
         latin:moreKeys="@string/more_keys_for_greater_than" />
 </merge>
diff --git a/java/res/xml/keys_parentheses.xml b/java/res/xml/keys_parentheses.xml
index bacb26d..6853bf1 100644
--- a/java/res/xml/keys_parentheses.xml
+++ b/java/res/xml/keys_parentheses.xml
@@ -23,10 +23,10 @@
 >
     <Key
         latin:keyLabel="("
-        latin:keyOutputText="@string/output_text_for_left_parenthesis"
+        latin:code="@integer/keycode_for_left_parenthesis"
         latin:moreKeys="@string/more_keys_for_left_parenthesis" />
     <Key
         latin:keyLabel=")"
-        latin:keyOutputText="@string/output_text_for_right_parenthesis"
+        latin:code="@integer/keycode_for_right_parenthesis"
         latin:moreKeys="@string/more_keys_for_right_parenthesis" />
 </merge>
diff --git a/java/res/xml/keys_square_brackets.xml b/java/res/xml/keys_square_brackets.xml
index 3525f4d..44387c3 100644
--- a/java/res/xml/keys_square_brackets.xml
+++ b/java/res/xml/keys_square_brackets.xml
@@ -23,8 +23,8 @@
 >
     <Key
         latin:keyLabel="["
-        latin:keyOutputText="@string/output_text_for_left_square_bracket" />
+        latin:code="@integer/keycode_for_left_square_bracket" />
     <Key
         latin:keyLabel="]"
-        latin:keyOutputText="@string/output_text_for_right_square_bracket" />
+        latin:code="@integer/keycode_for_right_square_bracket" />
 </merge>