This the next browser test that we could like to add in the ServicificationBackgroundServiceTest:)

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/698f5fb8f05a44681382029746c3ea533caa0c9d

commit 698f5fb8f05a44681382029746c3ea533caa0c9d
Author: Min Qin <qinmin@chromium.org>
Date: Wed Dec 05 06:26:23 2018

Add instrumentation test for resuming a download with service manager only mode

This CL adds an instrumentation test for resuming a download with only
service manager running

BUG= 910734 

Change-Id: I0b8468b8db5920bdc8c3b57ad155865771f36fe0
Reviewed-on: https://chromium-review.googlesource.com/c/1357600
Commit-Queue: Min Qin <qinmin@chromium.org>
Reviewed-by: Xing Liu <xingliu@chromium.org>
Reviewed-by: Xi Han <hanxi@chromium.org>
Reviewed-by: Tommy Nyquist <nyquist@chromium.org>
Cr-Commit-Position: refs/heads/master@{#613886}
[modify] https://crrev.com/698f5fb8f05a44681382029746c3ea533caa0c9d/chrome/android/java/src/org/chromium/chrome/browser/download/DownloadManagerService.java
[modify] https://crrev.com/698f5fb8f05a44681382029746c3ea533caa0c9d/chrome/android/java_sources.gni
[add] https://crrev.com/698f5fb8f05a44681382029746c3ea533caa0c9d/chrome/android/javatests/src/org/chromium/chrome/browser/ServicificationBackgroundService.java
[modify] https://crrev.com/698f5fb8f05a44681382029746c3ea533caa0c9d/chrome/android/javatests/src/org/chromium/chrome/browser/ServicificationBackgroundServiceTest.java
[add] https://crrev.com/698f5fb8f05a44681382029746c3ea533caa0c9d/chrome/android/javatests/src/org/chromium/chrome/browser/download/ServicificationDownloadTest.java
[modify] https://crrev.com/698f5fb8f05a44681382029746c3ea533caa0c9d/chrome/browser/android/download/download_manager_service.cc
[modify] https://crrev.com/698f5fb8f05a44681382029746c3ea533caa0c9d/chrome/browser/android/download/download_manager_service.h
[modify] https://crrev.com/698f5fb8f05a44681382029746c3ea533caa0c9d/components/download/internal/common/in_progress_download_manager.cc
[modify] https://crrev.com/698f5fb8f05a44681382029746c3ea533caa0c9d/components/download/public/common/in_progress_download_manager.h