Add support for pulling icons for OfflineItems

components/offline_items_collection/core/offline_content_aggregator_unittest.cc

 // Copyright (c) 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.
 
 #include "components/offline_items_collection/core/offline_content_aggregator.h"
 
 #include <map>
 
 #include "base/memory/ptr_util.h"
 #include "base/test/test_mock_time_task_runner.h"
@@ skipping 281 matching lines @@
   EXPECT_CALL(provider1, OpenItem(id1)).Times(1);
   EXPECT_CALL(provider2, OpenItem(id2)).Times(1);
   EXPECT_CALL(provider1, RemoveItem(id1)).Times(1);
   EXPECT_CALL(provider2, RemoveItem(id2)).Times(1);
   EXPECT_CALL(provider1, CancelDownload(id1)).Times(1);
   EXPECT_CALL(provider2, CancelDownload(id2)).Times(1);
   EXPECT_CALL(provider1, ResumeDownload(id1)).Times(1);
   EXPECT_CALL(provider2, ResumeDownload(id2)).Times(1);
   EXPECT_CALL(provider1, PauseDownload(id1)).Times(1);
   EXPECT_CALL(provider2, PauseDownload(id2)).Times(1);
+  EXPECT_CALL(provider1, GetVisualsForItem(id1, _)).Times(1);
+  EXPECT_CALL(provider2, GetVisualsForItem(id2, _)).Times(1);
   aggregator_.OpenItem(id1);
   aggregator_.OpenItem(id2);
   aggregator_.RemoveItem(id1);
   aggregator_.RemoveItem(id2);
   aggregator_.CancelDownload(id1);
   aggregator_.CancelDownload(id2);
   aggregator_.ResumeDownload(id1);
   aggregator_.ResumeDownload(id2);
   aggregator_.PauseDownload(id1);
   aggregator_.PauseDownload(id2);
+  aggregator_.GetVisualsForItem(id1, OfflineContentProvider::VisualsCallback());
+  aggregator_.GetVisualsForItem(id2, OfflineContentProvider::VisualsCallback());
 }
 
 TEST_F(OfflineContentAggregatorTest, ActionPropagatesAfterInitialize) {
   ScopedMockOfflineContentProvider provider1("1", &aggregator_);
   ScopedMockOfflineContentProvider provider2("2", &aggregator_);
 
   ContentId id1("1", "A");
   ContentId id2("2", "B");
   ContentId id3("2", "C");
 
@@ skipping 146 matching lines @@
   EXPECT_TRUE(provider.HasObserver(&aggregator_));
   EXPECT_EQ(nullptr, aggregator_.GetItemById(id1));
   EXPECT_EQ(&item2, aggregator_.GetItemById(id2));
 
   aggregator_.UnregisterProvider("2");
   EXPECT_FALSE(provider.HasObserver(&aggregator_));
 }
 
 }  // namespace
 }  // namespace offline_items_collection