Exclude shortcuts in popup from IconCache.

We want to load from/save icons to icon cache for pinned shortcuts only
to reduce memory footprint.

Bug: 140242324
Change-Id: I25c7d59e29c6e27752b36c2c3c226849d4e177af

src/com/android/launcher3/icons/ComponentWithLabel.java

@@ -34,9 +34,11 @@ public interface ComponentWithLabel {
     class ComponentCachingLogic implements CachingLogic<ComponentWithLabel> {
 
         private final PackageManager mPackageManager;
+        private final boolean mAddToMemCache;
 
-        public ComponentCachingLogic(Context context) {
+        public ComponentCachingLogic(Context context, boolean addToMemCache) {
             mPackageManager = context.getPackageManager();
+            mAddToMemCache = addToMemCache;
         }
 
         @Override
@@ -60,5 +62,10 @@ public interface ComponentWithLabel {
             // Do not load icon.
             target.icon = BitmapInfo.LOW_RES_ICON;
         }
+
+        @Override
+        public boolean addToMemCache() {
+            return mAddToMemCache;
+        }
     }
 }