Propagate server response error and interrupt the download.

content/browser/download/parallel_download_job.cc

Index: content/browser/download/parallel_download_job.cc
diff --git a/content/browser/download/parallel_download_job.cc b/content/browser/download/parallel_download_job.cc
index c8bba093fa4d9ed30d7e44329826058fa4f3727c..2a88078e9ff502b7af8f46a5f5b3ad58ee3f51fe 100644
--- a/content/browser/download/parallel_download_job.cc
+++ b/content/browser/download/parallel_download_job.cc
@@ -49,6 +49,15 @@ void ParallelDownloadJob::Resume(bool resume_request) {
     worker->Resume();
 }
 
+void ParallelDownloadJob::OnServerResponseError(
+    DownloadWorker* worker,
+    DownloadInterruptReason reason) {
+  // TODO(xingliu): Consider to let the original request to cover the full
+  // content if the sub-requests get invalid response. Consider retry on certain
+  // error.
+  DownloadJob::Interrupt(reason);
+}
+
 void ParallelDownloadJob::ForkRequestsForNewDownload(int64_t bytes_received,
                                                      int64_t total_bytes,
                                                      int request_count) {
@@ -63,7 +72,6 @@ void ParallelDownloadJob::ForkRequestsForNewDownload(int64_t bytes_received,
   int num_requests = bytes_left / slice_size;
   int64_t current_offset = bytes_received + slice_size;
 
-  // TODO(xingliu): Add records for slices in history db.
   for (int i = 0; i < num_requests - 1; ++i) {
     int64_t length = (i == (num_requests - 2))
                          ? slice_size + (bytes_left % slice_size)
@@ -100,7 +108,8 @@ void ParallelDownloadJob::BuildParallelRequests() {
 }
 
 void ParallelDownloadJob::CreateRequest(int64_t offset, int64_t length) {
-  std::unique_ptr<DownloadWorker> worker = base::MakeUnique<DownloadWorker>();
+  std::unique_ptr<DownloadWorker> worker =
+      base::MakeUnique<DownloadWorker>(this, offset, length);
 
   DCHECK(download_item_);
   StoragePartition* storage_partition =