Refactor GestureNavigationSeekBarPreference

- Make GestureNavigationSeekBarPreference more flexible to configure

Fixes: 146462894
Test: adb shell am start -a android.settings.ASSIST_GESTURE_SETTINGS
      adb shell am start -a com.android.settings.GESTURE_NAVIGATION_SETTINGS

Change-Id: Ibc7ed8456fe4a42f12f0d436f53756df268acfbe

res/layout/preference_labeled_slider.xml

@@ -62,7 +62,6 @@
             android:layout_height="wrap_content"
             android:layout_gravity="start|top"
             android:gravity="start"
-            android:text="@string/low_label"
             android:layout_weight="1"/>
 
         <TextView
@@ -72,7 +71,6 @@
             android:layout_height="wrap_content"
             android:layout_gravity="end|top"
             android:gravity="end"
-            android:text="@string/high_label"
             android:layout_weight="1"/>
 
     </LinearLayout>

res/values/attrs.xml

@@ -159,6 +159,12 @@
         <attr name="textOff" format="reference" />
     </declare-styleable>
 
+    <!-- For LabeledSeekBarPreference -->
+    <declare-styleable name="LabeledSeekBarPreference">
+        <attr name="textStart" format="reference" />
+        <attr name="textEnd" format="reference" />
+    </declare-styleable>
+
     <declare-styleable name="TintDrawable">
         <attr name="android:tint" />
         <attr name="android:drawable" />

res/xml/gesture_navigation_settings.xml

@@ -28,17 +28,21 @@
         android:persistent="false"
         android:title="@string/back_sensitivity_dialog_title">
 
-        <com.android.settings.gestures.GestureNavigationSeekBarPreference
+        <com.android.settings.widget.LabeledSeekBarPreference
             android:key="gesture_left_back_sensitivity"
             android:title="@string/left_edge"
             android:max="3"
-            android:selectable="true"/>
+            android:selectable="true"
+            settings:textStart="@string/low_label"
+            settings:textEnd="@string/high_label"/>
 
-        <com.android.settings.gestures.GestureNavigationSeekBarPreference
+        <com.android.settings.widget.LabeledSeekBarPreference
             android:key="gesture_right_back_sensitivity"
             android:title="@string/right_edge"
             android:max="3"
-            android:selectable="true"/>
+            android:selectable="true"
+            settings:textStart="@string/low_label"
+            settings:textEnd="@string/high_label"/>
     </PreferenceCategory>
 
     <com.android.settingslib.widget.FooterPreference