[Downloads] Remove externally deleted items from downloads history

chrome/android/java/src/org/chromium/chrome/browser/download/DownloadUtils.java

Index: chrome/android/java/src/org/chromium/chrome/browser/download/DownloadUtils.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/download/DownloadUtils.java b/chrome/android/java/src/org/chromium/chrome/browser/download/DownloadUtils.java
index 34663fc1a7eaf65f57ddad6a53a1f27d3e26a9c8..5470bf252c8309d954413faea85fafde1e11e72e 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/download/DownloadUtils.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/download/DownloadUtils.java
@@ -5,9 +5,11 @@
 package org.chromium.chrome.browser.download;
 
 import android.app.Activity;
+import android.content.Context;
 import android.content.Intent;
 
 import org.chromium.base.metrics.RecordHistogram;
+import org.chromium.base.metrics.RecordUserAction;
 import org.chromium.chrome.browser.IntentHandler;
 import org.chromium.chrome.browser.UrlConstants;
 import org.chromium.chrome.browser.tab.Tab;
@@ -55,4 +57,21 @@ public class DownloadUtils {
         RecordHistogram.recordPercentageHistogram("OfflinePages.SavePage.PercentLoaded",
                 tab.getProgress());
     }
+
+    /**
+     * Issues a request to the DownloadManagerService to check for externally removed downloads.
+     * See {@link DownloadManagerService#checkForExternallyRemovedDownloads}.
+     *
+     * @param applicationContext The {@link Context} of the single, global Application. Used to
+     *                           retrieve the DownloadManagerService.
+     * @param isOffTheRecord     Whether to check downloads for the off the record profile.
+     */
+    public static void checkForExternallyRemovedDownloads(Context applicationContext,
+            boolean isOffTheRecord) {
+        DownloadManagerService service =
+                DownloadManagerService.getDownloadManagerService(applicationContext);
+        service.checkForExternallyRemovedDownloads(isOffTheRecord);
+        RecordUserAction.record(
+                "Android.DownloadManager.CheckForExternallyRemovedItems");
+    }
 }