Download infobar : Fixed byte size string

Since Formatter.formatFileSize switched to SI system starting from
android-O, we show 1.07GB for a 1GB file. Using our own formatter that
works with multiples of 1024 fixes this issue which is also used for
download home and notifications.

Bug: 891457
Change-Id: I238c0a2654908d550c91f4c77ec9a5a802bd6775
Reviewed-on: https://chromium-review.googlesource.com/c/1315700Reviewed-by: Min Qin <qinmin@chromium.org>
Commit-Queue: Shakti Sahu <shaktisahu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#605156}

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

@@ -11,7 +11,6 @@ import android.support.annotation.IntDef;
 import android.support.annotation.Nullable;
 import android.support.annotation.PluralsRes;
 import android.text.TextUtils;
-import android.text.format.Formatter;
 
 import org.chromium.base.ApplicationStatus;
 import org.chromium.base.ContextUtils;
@@ -583,8 +582,8 @@ public class DownloadInfoBarController implements OfflineContentProvider.Observe
                             R.plurals.download_infobar_downloading_files, inProgressDownloadCount,
                             inProgressDownloadCount);
                 } else {
-                    String bytesString =
-                            Formatter.formatFileSize(getContext(), totalDownloadingSizeBytes);
+                    String bytesString = DownloadUtils.getStringForBytes(
+                            getContext(), totalDownloadingSizeBytes);
                     info.message = inProgressDownloadCount == 1
                             ? getContext().getString(
                                       R.string.downloading_file_with_bytes, bytesString)