Lingering gesture floating preview text a bit

Bug: 6936095
Change-Id: I873343e9aa6afdf6bdb223795f03232509b012a7
diff --git a/java/res/values/attrs.xml b/java/res/values/attrs.xml
index 02e8eeb..4975d65 100644
--- a/java/res/values/attrs.xml
+++ b/java/res/values/attrs.xml
@@ -119,6 +119,7 @@
             <enum name="boldItalic" value="3" />
         </attr>
 
+        <!-- Attributes for PreviewPlacerView -->
         <attr name="gestureFloatingPreviewTextSize" format="dimension" />
         <attr name="gestureFloatingPreviewTextColor" format="color" />
         <attr name="gestureFloatingPreviewTextOffset" format="dimension" />
@@ -128,6 +129,8 @@
         <attr name="gestureFloatingPreviewTextShadowBorder" format="dimension" />
         <attr name="gestureFloatingPreviewTextConnectorColor" format="color" />
         <attr name="gestureFloatingPreviewTextConnectorWidth" format="dimension" />
+        <!-- Delay after gesture input and gesture floating preview text dismissing in millisecond -->
+        <attr name="gestureFloatingPreviewTextLingerTimeout" format="integer" />
         <attr name="gesturePreviewTrailColor" format="color" />
         <attr name="gesturePreviewTrailWidth" format="dimension" />
     </declare-styleable>