Fix issue with configuration update check.

- We can hold a reference to the same configuration since it is updated
  and re-dispatched. Instead, make a copy of the configuration to store
  the last configuration state.

Fixes: 63755686
Test: Open Recents, rotate, ensure that the display bounds and task bounds
      are calculated correctly.

Change-Id: Ie0d2b5a0fa479428614d9593a2379420ccbd2fb4

packages/SystemUI/src/com/android/systemui/pip/phone/PipTouchState.java

@@ -29,7 +29,7 @@ import java.io.PrintWriter;
  */
 public class PipTouchState {
     private static final String TAG = "PipTouchHandler";
-    private static final boolean DEBUG = true;
+    private static final boolean DEBUG = false;
 
     private ViewConfiguration mViewConfig;
 

packages/SystemUI/src/com/android/systemui/recents/RecentsActivity.java

@@ -337,7 +337,7 @@ public class RecentsActivity extends Activity implements ViewTreeObserver.OnPreD
         getWindow().getAttributes().privateFlags |=
                 WindowManager.LayoutParams.PRIVATE_FLAG_FORCE_DECOR_VIEW_VISIBILITY;
 
-        mLastConfig = Utilities.getAppConfiguration(this);
+        mLastConfig = new Configuration(Utilities.getAppConfiguration(this));
         mFocusTimerDuration = getResources().getInteger(R.integer.recents_auto_advance_duration);
         mIterateTrigger = new DozeTrigger(mFocusTimerDuration, new Runnable() {
             @Override