Fixing FileLogs tests

During tests, the logs directory is changed. But the active thread
was not getting stopped which was causing some logs to be written
to the old location corresponding to some previous test

Change-Id: I7b8587eae0eb68fa180e3992694cab3745922483

AndroidManifest.xml

@@ -49,7 +49,16 @@
     <uses-permission android:name="com.android.launcher3.permission.READ_SETTINGS" />
     <uses-permission android:name="com.android.launcher3.permission.WRITE_SETTINGS" />
 
-    <application>
+    <application
+        android:backupAgent="com.android.launcher3.LauncherBackupAgent"
+        android:fullBackupOnly="true"
+        android:fullBackupContent="@xml/backupscheme"
+        android:hardwareAccelerated="true"
+        android:icon="@mipmap/ic_launcher_home"
+        android:label="@string/app_name"
+        android:largeHeap="@bool/config_largeHeap"
+        android:restoreAnyVersion="true"
+        android:supportsRtl="true" >
 
         <!--
         Main launcher activity. When extending only change the name, and keep all the

src/com/android/launcher3/logging/FileLog.java

@@ -40,6 +40,15 @@ public final class FileLog {
     private static File sLogsDirectory = null;
 
     public static void setDir(File logsDir) {
+        if (ProviderConfig.IS_DOGFOOD_BUILD) {
+            synchronized (DATE_FORMAT) {
+                // If the target directory changes, stop any active thread.
+                if (sHandler != null && !logsDir.equals(sLogsDirectory)) {
+                    ((HandlerThread) sHandler.getLooper().getThread()).quit();
+                    sHandler = null;
+                }
+            }
+        }
         sLogsDirectory = logsDir;
     }