Change options corner radius to applied style 1/2

 - Change the corner radius from 8dp to applied style, will impact
 Style, Grid and Clock tab's options, https://docs.google.com/presentation/d/15JadcGi5k1_0znUN_XdFpU7UxeXwxjK3Y7LxvhW5ETM/edit?ts=5ec60161#slide=id.g7c8f4a82bf_0_60
 - Screenshots: https://screenshot.googleplex.com/fcArOYdke1O.png
 https://screenshot.googleplex.com/iY04EkneEae.png
 https://screenshot.googleplex.com/YPdWJAgoTMA.png

Change-Id: I48a11d319abe67c1658c1028d055c765ef29fca4
diff --git a/res/drawable/option_border.xml b/res/drawable/option_border.xml
index fbeddca..ff03ed0 100644
--- a/res/drawable/option_border.xml
+++ b/res/drawable/option_border.xml
@@ -18,7 +18,7 @@
     <item android:id="@android:id/mask">
         <shape android:shape="rectangle">
             <solid android:color="@android:color/white"/>
-            <corners android:radius="8dp" />
+            <corners android:radius="?android:dialogCornerRadius" />
         </shape>
     </item>
     <item android:drawable="@drawable/option_border_edge" />
diff --git a/res/drawable/option_border_edge.xml b/res/drawable/option_border_edge.xml
index 297acfb..6d633c3 100644
--- a/res/drawable/option_border_edge.xml
+++ b/res/drawable/option_border_edge.xml
@@ -20,7 +20,7 @@
             <stroke
                 android:color="@color/option_border_color"
                 android:width="@dimen/option_selected_border_width" />
-            <corners android:radius="8dp" />
+            <corners android:radius="?android:dialogCornerRadius" />
         </shape>
     </item>
     <item android:state_activated="false">
@@ -28,7 +28,7 @@
             <stroke
                 android:color="@color/option_border_color"
                 android:width="@dimen/option_border_width" />
-            <corners android:radius="8dp" />
+            <corners android:radius="?android:dialogCornerRadius" />
         </shape>
     </item>
 </selector>