Set default title for PreviewFragment

It seemed the better than previous way to set default title

Test: Manually
Bug: 160211359
Change-Id: I0e47a62488d01022baca829b618a5f41d50d74a3
diff --git a/src/com/android/customization/module/DefaultCustomizationInjector.java b/src/com/android/customization/module/DefaultCustomizationInjector.java
index b245d5b..e18cb2d 100644
--- a/src/com/android/customization/module/DefaultCustomizationInjector.java
+++ b/src/com/android/customization/module/DefaultCustomizationInjector.java
@@ -91,8 +91,7 @@
             int mode,
             boolean viewAsHome,
             boolean testingModeEnabled) {
-        return PreviewFragment.newInstance(context, wallpaperInfo, mode, viewAsHome,
-                testingModeEnabled);
+        return PreviewFragment.newInstance(wallpaperInfo, mode, viewAsHome, testingModeEnabled);
     }
 
     @Override
diff --git a/src_override/com/android/wallpaper/module/WallpapersInjector.java b/src_override/com/android/wallpaper/module/WallpapersInjector.java
index 9492e0b..b9a6952 100755
--- a/src_override/com/android/wallpaper/module/WallpapersInjector.java
+++ b/src_override/com/android/wallpaper/module/WallpapersInjector.java
@@ -70,7 +70,7 @@
             int mode,
             boolean viewAsHome,
             boolean testingModeEnabled) {
-        return ImagePreviewFragment.newInstance(context, wallpaperInfo, mode, viewAsHome,
+        return ImagePreviewFragment.newInstance(wallpaperInfo, mode, viewAsHome,
                 testingModeEnabled);
     }