Disabled task snapshot for TV

This was causing memory leaks when opening/closing Apps view. Will
disable this feature on TV since we are running low on RAM.

Bug: 62040693
Test: Compiles
Change-Id: Ifc43118dd072f17a047003d1797004bd441669b8

services/core/java/com/android/server/wm/TaskSnapshotController.java

@@ -17,15 +17,13 @@
 package com.android.server.wm;
 
 import static android.app.ActivityManager.ENABLE_TASK_SNAPSHOTS;
-import static android.graphics.Bitmap.Config.ARGB_8888;
-import static android.graphics.Bitmap.Config.HARDWARE;
 
 import android.annotation.Nullable;
 import android.app.ActivityManager;
 import android.app.ActivityManager.StackId;
 import android.app.ActivityManager.TaskSnapshot;
+import android.content.pm.PackageManager;
 import android.graphics.Bitmap;
-import android.graphics.Canvas;
 import android.graphics.GraphicBuffer;
 import android.graphics.Rect;
 import android.os.Environment;
@@ -38,11 +36,11 @@ import android.view.WindowManager.LayoutParams;
 import android.view.WindowManagerPolicy.ScreenOffListener;
 import android.view.WindowManagerPolicy.StartingSurface;
 
-import com.google.android.collect.Sets;
-
 import com.android.internal.annotations.VisibleForTesting;
 import com.android.server.wm.TaskSnapshotSurface.SystemBarBackgroundPainter;
 
+import com.google.android.collect.Sets;
+
 import java.io.PrintWriter;
 
 /**
@@ -89,9 +87,16 @@ class TaskSnapshotController {
     private final ArraySet<Task> mTmpTasks = new ArraySet<>();
     private final Handler mHandler = new Handler();
 
+    /**
+     * Flag indicating whether we are running on an Android TV device.
+     */
+    private final boolean mIsRunningOnTv;
+
     TaskSnapshotController(WindowManagerService service) {
         mService = service;
         mCache = new TaskSnapshotCache(mService, mLoader);
+        mIsRunningOnTv = mService.mContext.getPackageManager().hasSystemFeature(
+                PackageManager.FEATURE_LEANBACK);
     }
 
     void systemReady() {
@@ -112,7 +117,7 @@ class TaskSnapshotController {
     }
 
     private void handleClosingApps(ArraySet<AppWindowToken> closingApps) {
-        if (!ENABLE_TASK_SNAPSHOTS || ActivityManager.isLowRamDeviceStatic()) {
+        if (shouldDisableSnapshots()) {
             return;
         }
 
@@ -188,6 +193,10 @@ class TaskSnapshotController {
                 1f /* scale */);
     }
 
+    private boolean shouldDisableSnapshots() {
+        return !ENABLE_TASK_SNAPSHOTS || ActivityManager.isLowRamDeviceStatic() || mIsRunningOnTv;
+    }
+
     private Rect minRect(Rect rect1, Rect rect2) {
         return new Rect(Math.min(rect1.left, rect2.left),
                 Math.min(rect1.top, rect2.top),
@@ -301,7 +310,7 @@ class TaskSnapshotController {
      * Called when screen is being turned off.
      */
     void screenTurningOff(ScreenOffListener listener) {
-        if (!ENABLE_TASK_SNAPSHOTS || ActivityManager.isLowRamDeviceStatic()) {
+        if (shouldDisableSnapshots()) {
             listener.onScreenOff();
             return;
         }