Added member data to classes to support download resumption.

content/browser/download/download_manager.cc

Index: content/browser/download/download_manager.cc
diff --git a/content/browser/download/download_manager.cc b/content/browser/download/download_manager.cc
index e80113ea221fcba9c8c09a0a3c58343002f517d6..29ef7d3b851048c408d15183c5a71e6e76f0f620 100644
--- a/content/browser/download/download_manager.cc
+++ b/content/browser/download/download_manager.cc
@@ -281,8 +281,7 @@ void DownloadManager::OnFileRemovalDetected(int64 db_handle) {
   }
 }
 
-void DownloadManager::RestartDownload(
-    int32 download_id) {
+void DownloadManager::RestartDownload(int32 download_id) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 
   DownloadItem* download = GetActiveDownloadItem(download_id);
@@ -367,13 +366,14 @@ void DownloadManager::ContinueDownloadWithPath(DownloadItem* download,
   delegate_->AddItemToPersistentStore(download);
 }
 
-void DownloadManager::UpdateDownload(int32 download_id, int64 size) {
+void DownloadManager::UpdateDownload(int32 download_id, int64 size,
+                                     const std::string& partial_hash) {
   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, partial_hash);
       UpdateDownloadProgress();  // Reflect size updates.
       delegate_->UpdateItemInPersistentStore(download);
     }
@@ -563,6 +563,7 @@ void DownloadManager::DownloadCancelledInternal(DownloadItem* download) {
 
 void DownloadManager::OnDownloadInterrupted(int32 download_id,
                                             int64 size,
+                                            const std::string partial_hash,
                                             InterruptReason reason) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 
@@ -577,7 +578,7 @@ void DownloadManager::OnDownloadInterrupted(int32 download_id,
            << " download = " << download->DebugString(true);
 
   RemoveFromActiveList(download);
-  download->Interrupted(size, reason);
+  download->Interrupted(size, partial_hash, reason);
   download->OffThreadCancel(file_manager_);
 }