Remove mVideoPaused from VideoPreference

- We destoryed the MediaPlayer when VideoPreference is onPause().
When VideoPreference is onResumed, MediaPlayer always start from
pause state, we don't need a data save/restore current video state.

Bug: 143270527
Test: robolectric, manual
Change-Id: I544e933e4237f6d92aeff8a7eb04b52e89d74a4a

src/com/android/settings/widget/VideoPreference.java

@@ -45,7 +45,6 @@ public class VideoPreference extends Preference {
     AnimationController mAnimationController;
     @VisibleForTesting
     boolean mAnimationAvailable;
-    private boolean mVideoPaused;
     private float mAspectRatio = 1.0f;
     private int mPreviewId;
     private int mAnimationId;
@@ -130,11 +129,16 @@ public class VideoPreference extends Preference {
         super.onDetached();
     }
 
-    public void onViewVisible(boolean videoPaused) {
-        mVideoPaused = videoPaused;
+    /**
+     * Called from {@link VideoPreferenceController} when the view is onResume
+     */
+    public void onViewVisible() {
         initAnimationController();
     }
 
+    /**
+     * Called from {@link VideoPreferenceController} when the view is onPause
+     */
     public void onViewInvisible() {
         releaseAnimationController();
     }
@@ -174,10 +178,6 @@ public class VideoPreference extends Preference {
         return mAnimationAvailable;
     }
 
-    public boolean isVideoPaused() {
-        return mVideoPaused;
-    }
-
     /**
      * sets the height of the video preference
      *