Disable notifications and infobar UI for content indexed downloads

Bug: 1011415
Change-Id: Ide63b34e5afdf9a446cb8c7f5803008c7ced6769
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1841939Reviewed-by: Rayan Kanso <rayankans@chromium.org>
Reviewed-by: David Trainor <dtrainor@chromium.org>
Commit-Queue: Shakti Sahu <shaktisahu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#704654}

chrome/browser/content_index/content_index_provider_impl.cc

@@ -101,7 +101,7 @@ OfflineItem EntryToOfflineItem(const content::ContentIndexEntry& entry) {
   item.description = entry.description->description;
   item.filter = CategoryToFilter(entry.description->category);
   item.is_transient = false;
-  item.is_suggested = false;
+  item.is_suggested = true;
   item.creation_time = entry.registration_time;
   item.is_openable = true;
   item.state = offline_items_collection::OfflineItemState::COMPLETE;

chrome/browser/content_index/content_index_provider_unittest.cc

@@ -83,6 +83,7 @@ TEST_F(ContentIndexProviderImplTest, OfflineItemCreation) {
   EXPECT_FALSE(item.title.empty());
   EXPECT_FALSE(item.description.empty());
   EXPECT_FALSE(item.is_transient);
+  EXPECT_TRUE(item.is_suggested);
   EXPECT_TRUE(item.is_openable);
   EXPECT_EQ(item.page_url, kLaunchURL);
 }