Added member data to classes to support download resumption.

content/browser/download/download_persistent_store_info.h

Index: content/browser/download/download_persistent_store_info.h
diff --git a/content/browser/download/download_persistent_store_info.h b/content/browser/download/download_persistent_store_info.h
index 84a2b990f12c306cea1c921463651c798cd1bf31..bee528fbc8b50993e55e012e0ba910e98cf67351 100644
--- a/content/browser/download/download_persistent_store_info.h
+++ b/content/browser/download/download_persistent_store_info.h
@@ -9,10 +9,12 @@
 #define CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_PERSISTENT_STORE_INFO_H_
 #pragma once
 
+#include <string>
 #include <vector>
 
 #include "base/file_path.h"
 #include "base/time.h"
+#include "content/browser/download/interrupt_reasons.h"
 #include "content/common/content_export.h"
 #include "googleurl/src/gurl.h"
 
@@ -28,7 +30,6 @@ class DownloadItem;
 // the history, all fields except |referrer_url| are set by the DownloadDatabase
 // and read by the DownloadItem.
 struct CONTENT_EXPORT DownloadPersistentStoreInfo {
-  // TODO(ahendrickson) -- Reduce the number of constructors.
   DownloadPersistentStoreInfo();
   DownloadPersistentStoreInfo(const FilePath& path,
                               const GURL& url,
@@ -39,7 +40,11 @@ struct CONTENT_EXPORT DownloadPersistentStoreInfo {
                               int64 total,
                               int32 download_state,
                               int64 handle,
-                              bool download_opened);
+                              bool download_opened,
+                              const std::string& hash,
+                              const std::string& last_modified,
+                              const std::string& etag,
+                              InterruptReason reason);
   ~DownloadPersistentStoreInfo();  // For linux-clang.
 
   // The final path where the download is saved.
@@ -73,6 +78,20 @@ struct CONTENT_EXPORT DownloadPersistentStoreInfo {
 
   // Whether this download has ever been opened from the browser.
   bool opened;
+
+  // Sha256 hash of the content.  This might be empty either because
+  // the download hasn't started yet or because the hash isn't needed
+  // (ChromeDownloadManagerDelegate::GenerateFileHash() returned false).
+  std::string hash;
+
+  // Server's time stamp for the file.
+  std::string last_modified_time;
+
+  // Server's ETAG for the file.
+  std::string etag;
+
+  // The reason that the download was interrupted (if it was).
+  InterruptReason last_reason;
 };
 
 #endif  // CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_PERSISTENT_STORE_INFO_H_