Set range of overlay for pending download app animation to 0-75% from 0-50%

The pending download app animation had an overlay that ranged from 0% to 50% opacity. With this CL we shift the range to 0-75%.

Fix: 271470372
Test: download an app and see the animation for pending download
Change-Id: Ib0332eca2dad37efa916a9410e9466cc63574b5a
diff --git a/src/com/android/launcher3/graphics/PreloadIconDrawable.java b/src/com/android/launcher3/graphics/PreloadIconDrawable.java
index 8efd12a..5a50569 100644
--- a/src/com/android/launcher3/graphics/PreloadIconDrawable.java
+++ b/src/com/android/launcher3/graphics/PreloadIconDrawable.java
@@ -92,7 +92,7 @@
     private static final int PRELOAD_BACKGROUND_COLOR_INDEX = 1;
 
     private static final int ALPHA_DURATION_MILLIS = 3000;
-    private static final int OVERLAY_ALPHA_RANGE = 127;
+    private static final int OVERLAY_ALPHA_RANGE = 191;
     private static final long WAVE_MOTION_DELAY_FACTOR_MILLIS = 100;
     private static final WeakHashMap<Integer, PorterDuffColorFilter> COLOR_FILTER_MAP =
             new WeakHashMap<>();