Fix tablet url mode keyboard layout

This is follow up change of I0d92e513757e765d9de98561205754af5a143650

Change-Id: Ibfe8835bb184636e5fb06473cc864852b573fbd4

java/res/xml-xlarge/kbd_qwerty_row4.xml

@@ -71,8 +71,6 @@
             <case
                 latin:mode="email"
             >
-                <Key
-                    latin:keyLabel="_" />
                 <Key
                     latin:keyLabel="-" />
             </case>
@@ -83,6 +81,26 @@
                     latin:keyHintIcon="@drawable/key_hint_slash_holo"
                     latin:popupKeyboard="@xml/kbd_popup_template"
                     latin:popupCharacters="/" />
+            </default>
+        </switch>
+        <switch>
+            <case
+                latin:mode="email"
+            >
+                <Key
+                    latin:keyLabel="_" />
+            </case>
+            <case
+                latin:mode="url"
+            >
+                <Key
+                    latin:keyLabel="_"
+                    latin:temporaryShiftKeyLabel=":"
+                    latin:keyHintIcon="@drawable/key_hint_colon_holo"
+                    latin:popupKeyboard="@xml/kbd_popup_template"
+                    latin:popupCharacters=":" />
+            </case>
+            <default>
                 <Key
                     latin:keyLabel="_"
                     latin:temporaryShiftKeyLabel="\@"
@@ -92,4 +110,4 @@
             </default>
         </switch>
     </Row>
-</merge>
+</merge>
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