Add support for pulling icons for OfflineItems

components/offline_items_collection/core/android/java/src/org/chromium/components/offline_items_collection/bridges/OfflineItemVisualsBridge.java

+// Copyright 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package org.chromium.components.offline_items_collection.bridges;
+
+import android.graphics.Bitmap;
+
+import org.chromium.base.annotations.CalledByNative;
+import org.chromium.base.annotations.JNINamespace;
+import org.chromium.components.offline_items_collection.OfflineItemVisuals;
+
+/**
+ * The Java counterpart to the C++ class OfflineItemVisualsBridge
+ * (components/offline_items_collection/core/android/offline_item_visuals_bridge.h).  This class has
+ * no public members or methods and is meant as a private factory to build
+ * {@link OfflineItemVisuals} instances.
+ */
+@JNINamespace("offline_items_collection::android")
+public final class OfflineItemVisualsBridge {
+    private OfflineItemVisualsBridge() {}
+
+    /**
+     * This is a helper method to allow C++ to create an {@link OfflineItemVisuals} object.
+     * @return The newly created {@link OfflineItemVisuals} based on the input parameters.
+     */
+    @CalledByNative
+    private static OfflineItemVisuals createOfflineItemVisuals(Bitmap icon) {
+        OfflineItemVisuals visuals = new OfflineItemVisuals();
+        visuals.icon = icon;
+        return visuals;
+    }
+}