Revert "Removing historical tasks when packages are uninstalled."

This reverts commit 5d1413e7c391fdb1325c6833399c10a8448354dc.

Change-Id: I6ca79949b4c92a5825554b91f4350685fa605c8f
diff --git a/packages/SystemUI/src/com/android/systemui/recents/history/RecentsHistoryAdapter.java b/packages/SystemUI/src/com/android/systemui/recents/history/RecentsHistoryAdapter.java
index 06265bd..2eee1da 100644
--- a/packages/SystemUI/src/com/android/systemui/recents/history/RecentsHistoryAdapter.java
+++ b/packages/SystemUI/src/com/android/systemui/recents/history/RecentsHistoryAdapter.java
@@ -110,9 +110,7 @@
         }
     }
 
-    private Context mContext;
     private LayoutInflater mLayoutInflater;
-    private final List<Task> mTasks = new ArrayList<>();
     private final List<Row> mRows = new ArrayList<>();
 
     public RecentsHistoryAdapter(Context context) {
@@ -123,10 +121,6 @@
      * Updates this adapter with the given tasks.
      */
     public void updateTasks(Context context, List<Task> tasks) {
-        mContext = context;
-        mTasks.clear();
-        mTasks.addAll(tasks);
-
         final Locale l = context.getResources().getConfiguration().locale;
         final String dateFormatStr = DateFormat.getBestDateTimePattern(l, "EEEEMMMMd");
         final List<Task> tasksMostRecent = new ArrayList<>(tasks);
@@ -150,24 +144,6 @@
         notifyDataSetChanged();
     }
 
-    /**
-     * Removes historical tasks beloning to the specified package and user.
-     */
-    public void removeTasks(String packageName, int userId) {
-        boolean packagesRemoved = false;
-        for (int i = mTasks.size() - 1; i >= 0; i--) {
-            Task task = mTasks.get(i);
-            String taskPackage = task.key.getComponent().getPackageName();
-            if (task.key.userId == userId && taskPackage.equals(packageName)) {
-                mTasks.remove(i);
-                packagesRemoved = true;
-            }
-        }
-        if (packagesRemoved) {
-            updateTasks(mContext, new ArrayList<Task>(mTasks));
-        }
-    }
-
     @Override
     public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
         switch (viewType) {
diff --git a/packages/SystemUI/src/com/android/systemui/recents/history/RecentsHistoryView.java b/packages/SystemUI/src/com/android/systemui/recents/history/RecentsHistoryView.java
index 7755dab..5851111 100644
--- a/packages/SystemUI/src/com/android/systemui/recents/history/RecentsHistoryView.java
+++ b/packages/SystemUI/src/com/android/systemui/recents/history/RecentsHistoryView.java
@@ -16,7 +16,6 @@
 
 package com.android.systemui.recents.history;
 
-import android.content.ComponentName;
 import android.content.Context;
 import android.content.res.Resources;
 import android.graphics.Rect;
@@ -30,18 +29,9 @@
 import android.widget.LinearLayout;
 import com.android.systemui.R;
 import com.android.systemui.recents.Recents;
-import com.android.systemui.recents.RecentsActivity;
 import com.android.systemui.recents.RecentsConfiguration;
-import com.android.systemui.recents.events.EventBus;
-import com.android.systemui.recents.events.activity.PackagesChangedEvent;
 import com.android.systemui.recents.misc.ReferenceCountedTrigger;
-import com.android.systemui.recents.misc.SystemServicesProxy;
-import com.android.systemui.recents.model.Task;
 import com.android.systemui.recents.model.TaskStack;
-import com.android.systemui.recents.views.TaskView;
-
-import java.util.ArrayList;
-import java.util.HashSet;
 
 /**
  * A list of the recent tasks that are not in the stack.
@@ -175,27 +165,8 @@
     }
 
     @Override
-    protected void onAttachedToWindow() {
-        SystemServicesProxy ssp = Recents.getSystemServices();
-        EventBus.getDefault().register(this, RecentsActivity.EVENT_BUS_PRIORITY + 1);
-        super.onAttachedToWindow();
-    }
-
-    @Override
-    protected void onDetachedFromWindow() {
-        super.onDetachedFromWindow();
-        EventBus.getDefault().unregister(this);
-    }
-
-    @Override
     public WindowInsets onApplyWindowInsets(WindowInsets insets) {
         setSystemInsets(insets.getSystemWindowInsets());
         return insets;
     }
-
-    /**** EventBus Events ****/
-
-    public final void onBusEvent(PackagesChangedEvent event) {
-        mAdapter.removeTasks(event.packageName, event.userId);
-    }
 }