Added member data to classes to support download resumption.

content/browser/download/download_manager_impl.cc

Index: content/browser/download/download_manager_impl.cc
diff --git a/content/browser/download/download_manager_impl.cc b/content/browser/download/download_manager_impl.cc
index f1a730925229a790d46fe26b074be90ae79889b1..cd23651740c38037475e82c51d426aa74bc21236 100644
--- a/content/browser/download/download_manager_impl.cc
+++ b/content/browser/download/download_manager_impl.cc
@@ -284,8 +284,7 @@ void DownloadManagerImpl::OnFileRemovalDetected(int64 db_handle) {
   }
 }
 
-void DownloadManagerImpl::RestartDownload(
-    int32 download_id) {
+void DownloadManagerImpl::RestartDownload(int32 download_id) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 
   DownloadItem* download = GetActiveDownloadItem(download_id);
@@ -378,13 +377,15 @@ void DownloadManagerImpl::ContinueDownloadWithPath(
   delegate_->AddItemToPersistentStore(download);
 }
 
-void DownloadManagerImpl::UpdateDownload(int32 download_id, int64 size) {
+void DownloadManagerImpl::UpdateDownload(int32 download_id,
+                                         int64 size,
+                                         Pickle hash_state) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   DownloadMap::iterator it = active_downloads_.find(download_id);
   if (it != active_downloads_.end()) {
     DownloadItem* download = it->second;
     if (download->IsInProgress()) {
-      download->Update(size);
+      download->Update(size, hash_state);
       UpdateDownloadProgress();  // Reflect size updates.
       delegate_->UpdateItemInPersistentStore(download);
     }
@@ -575,6 +576,7 @@ void DownloadManagerImpl::DownloadCancelledInternal(DownloadItem* download) {
 
 void DownloadManagerImpl::OnDownloadInterrupted(int32 download_id,
                                                 int64 size,
+                                                Pickle hash_state,
                                                 InterruptReason reason) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 
@@ -589,7 +591,7 @@ void DownloadManagerImpl::OnDownloadInterrupted(int32 download_id,
            << " download = " << download->DebugString(true);
 
   RemoveFromActiveList(download);
-  download->Interrupted(size, reason);
+  download->Interrupted(size, hash_state, reason);
   download->OffThreadCancel(file_manager_);
 }