Reland of [NTP] Refresh download list when NTP is open.

chrome/android/java/src/org/chromium/chrome/browser/ntp/NewTabPage.java

Index: chrome/android/java/src/org/chromium/chrome/browser/ntp/NewTabPage.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/ntp/NewTabPage.java b/chrome/android/java/src/org/chromium/chrome/browser/ntp/NewTabPage.java
index da10c9b97b504c3236baca4c5df76e0506bb707d..eda72050881735c7724025299c753b1f95522a7e 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/ntp/NewTabPage.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/ntp/NewTabPage.java
@@ -21,6 +21,7 @@ import android.view.View;
 import org.chromium.base.ApiCompatibilityUtils;
 import org.chromium.base.Callback;
 import org.chromium.base.CommandLine;
+import org.chromium.base.ContextUtils;
 import org.chromium.base.Log;
 import org.chromium.base.ObserverList;
 import org.chromium.base.ThreadUtils;
@@ -35,6 +36,7 @@ import org.chromium.chrome.browser.NativePage;
 import org.chromium.chrome.browser.UrlConstants;
 import org.chromium.chrome.browser.bookmarks.BookmarkUtils;
 import org.chromium.chrome.browser.compositor.layouts.content.InvalidationAwareThumbnailProvider;
+import org.chromium.chrome.browser.download.DownloadManagerService;
 import org.chromium.chrome.browser.download.DownloadUtils;
 import org.chromium.chrome.browser.favicon.FaviconHelper;
 import org.chromium.chrome.browser.favicon.FaviconHelper.FaviconImageCallback;
@@ -746,6 +748,9 @@ public class NewTabPage
         mNewTabPageView.initialize(mNewTabPageManager, mActivity, mSearchProviderHasLogo,
                 getScrollPositionFromNavigationEntry());
 
+        DownloadManagerService.getDownloadManagerService(ContextUtils.getApplicationContext())
+                .checkForExternallyRemovedDownloads(/*isOffRecord=*/false);
+
         RecordHistogram.recordBooleanHistogram(
                 "NewTabPage.MobileIsUserOnline", NetworkChangeNotifier.isOnline());
     }