Move codes generating html file from xml files to SettingsLib (1/2)

LicenseHtmlGeneratorFromXml, LicenseHtmlLoader and indirecly AsyncLoader
shoud be commonly used by Settings and TvSettings.

So this CL will move them to SettingsLib.

Test: building succeeded and tested on sailfish.
  make ROBOTEST_FILTER=SettingsLicenseActivityTest RunSettingsRoboTests

Change-Id: I12e9169b1d3d313a6c5da0d575a6526327268381

src/com/android/settings/deviceinfo/storage/StorageAsyncLoader.java

@@ -30,9 +30,9 @@ import android.util.ArraySet;
 import android.util.Log;
 import android.util.SparseArray;
 
-import com.android.settings.utils.AsyncLoader;
 import com.android.settings.wrapper.UserManagerWrapper;
 import com.android.settingslib.applications.StorageStatsSource;
+import com.android.settingslib.utils.AsyncLoader;
 import com.android.settingslib.wrapper.PackageManagerWrapper;
 
 import java.io.IOException;

src/com/android/settings/deviceinfo/storage/UserIconLoader.java

@@ -25,7 +25,7 @@ import android.util.SparseArray;
 
 import com.android.internal.util.Preconditions;
 import com.android.settings.Utils;
-import com.android.settings.utils.AsyncLoader;
+import com.android.settingslib.utils.AsyncLoader;
 
 /**
  * Fetches a user icon as a loader using a given icon loading lambda.

src/com/android/settings/deviceinfo/storage/VolumeSizesLoader.java

@@ -21,9 +21,9 @@ import android.content.Context;
 import android.os.storage.VolumeInfo;
 import android.support.annotation.VisibleForTesting;
 
-import com.android.settings.utils.AsyncLoader;
 import com.android.settingslib.deviceinfo.PrivateStorageInfo;
 import com.android.settingslib.deviceinfo.StorageVolumeProvider;
+import com.android.settingslib.utils.AsyncLoader;
 
 import java.io.IOException;