Fix the Download Notifications for Offline Pages to indicate bytes loaded.

chrome/android/java/src/org/chromium/chrome/browser/offlinepages/downloads/OfflinePageNotificationBridge.java

Index: chrome/android/java/src/org/chromium/chrome/browser/offlinepages/downloads/OfflinePageNotificationBridge.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/offlinepages/downloads/OfflinePageNotificationBridge.java b/chrome/android/java/src/org/chromium/chrome/browser/offlinepages/downloads/OfflinePageNotificationBridge.java
index 08fe717dcf4eebe028ba1965eec77e213f6a5d05..e518fd3332e0a76f2e2b99c957e55b4b39883c92 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/offlinepages/downloads/OfflinePageNotificationBridge.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/offlinepages/downloads/OfflinePageNotificationBridge.java
@@ -70,20 +70,22 @@ public class OfflinePageNotificationBridge {
      * @param displayName Name to be displayed on notification.
      */
     @CalledByNative
-    public static void notifyDownloadProgress(
-            Context context, String guid, String url, long startTime, String displayName) {
+    public static void notifyDownloadProgress(Context context, String guid, String url,
+            long startTime, long bytesReceived, String displayName) {
         DownloadNotifier notifier = getDownloadNotifier(context);
         if (notifier == null) return;
 
-        // Use -1 percentage for interdeterminate progress bar (until we have better value).
-        // TODO(qinmin): get the download percentage from native code,
-        int percentage = -1;
+        // To signal 'indeterminate' progress that doesn't have percentage value.

[fgorski, 2017/03/07 22:26:43]

... this comment would probably not be necessary then

[Dmitry Titov, 2017/03/08 00:47:38]

Done.

+        // UI is using a different style of progress bar if that is the case.
+        int percentage =
+                org.chromium.chrome.browser.download.DownloadItem.INVALID_DOWNLOAD_PERCENTAGE;
         DownloadInfo downloadInfo = new DownloadInfo.Builder()
                                             .setIsOfflinePage(true)
                                             .setDownloadGuid(guid)
                                             .setFileName(displayName)
                                             .setFilePath(url)
                                             .setPercentCompleted(percentage)
+                                            .setBytesReceived(bytesReceived)
                                             .setIsOffTheRecord(false)
                                             .setIsResumable(true)
                                             .setTimeRemainingInMillis(0)