Download auto resumption: Don't schedule task when feature is disabled.

Don't schedule auto resumption in native task when the feature is
disabled. Also adds a check in
AutoResumptionHandler::ResumeDownloadImmediately.

Bug: NONE
Change-Id: I03eff855fcd8674f32d4a3d5205114de01aa3bf1
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2250563Reviewed-by: Shakti Sahu <shaktisahu@chromium.org>
Commit-Queue: Xing Liu <xingliu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#779468}

chrome/android/java/src/org/chromium/chrome/browser/download/service/DownloadTaskScheduler.java

@@ -11,6 +11,8 @@ import org.chromium.base.ContextUtils;
 import org.chromium.base.TimeUtils;
 import org.chromium.base.annotations.CalledByNative;
 import org.chromium.base.annotations.JNINamespace;
+import org.chromium.chrome.browser.flags.CachedFeatureFlags;
+import org.chromium.chrome.browser.flags.ChromeFeatureList;
 import org.chromium.components.background_task_scheduler.BackgroundTaskScheduler;
 import org.chromium.components.background_task_scheduler.BackgroundTaskSchedulerFactory;
 import org.chromium.components.background_task_scheduler.TaskIds;
@@ -66,8 +68,10 @@ public class DownloadTaskScheduler {
                 TimeUtils.SECONDS_PER_MINUTE * 5, TimeUtils.SECONDS_PER_MINUTE * 10);
         scheduleTask(DownloadTaskType.CLEANUP_TASK, false, false, 0,
                 TimeUtils.SECONDS_PER_HOUR * 12, TimeUtils.SECONDS_PER_HOUR * 24);
-        scheduleTask(DownloadTaskType.DOWNLOAD_AUTO_RESUMPTION_TASK, false, false, 0,
-                TimeUtils.SECONDS_PER_MINUTE * 5, TimeUtils.SECONDS_PER_DAY);
+        if (CachedFeatureFlags.isEnabled(ChromeFeatureList.DOWNLOADS_AUTO_RESUMPTION_NATIVE)) {
+            scheduleTask(DownloadTaskType.DOWNLOAD_AUTO_RESUMPTION_TASK, false, false, 0,
+                    TimeUtils.SECONDS_PER_MINUTE * 5, TimeUtils.SECONDS_PER_DAY);
+        }
     }
 
     private static int getTaskId(@DownloadTaskType int taskType) {

components/download/public/common/auto_resumption_handler.cc

@@ -174,6 +174,9 @@ void AutoResumptionHandler::OnDownloadDestroyed(download::DownloadItem* item) {
 }
 
 void AutoResumptionHandler::ResumeDownloadImmediately() {
+  if (!config_->is_auto_resumption_enabled_in_native)
+    return;
+
   for (auto* download : std::move(downloads_to_retry_)) {
     if (SatisfiesNetworkRequirements(download))
       download->Resume(false);