Added member data to classes to support download resumption.

content/browser/download/download_resource_handler.h

Index: content/browser/download/download_resource_handler.h
diff --git a/content/browser/download/download_resource_handler.h b/content/browser/download/download_resource_handler.h
index a7dc77cfec5653e1c54c2738e481863667ca77d4..0b1d035b864f5090809c307ddec05ff2688b549f 100644
--- a/content/browser/download/download_resource_handler.h
+++ b/content/browser/download/download_resource_handler.h
@@ -11,10 +11,11 @@
 #include "base/callback.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/timer.h"
-#include "content/browser/download/download_file.h"
 #include "content/browser/download/download_id.h"
+#include "content/browser/download/download_types.h"
 #include "content/browser/renderer_host/global_request_id.h"
 #include "content/browser/renderer_host/resource_handler.h"
+#include "net/base/net_errors.h"
 
 class DownloadFileManager;
 class ResourceDispatcherHost;
@@ -77,6 +78,14 @@ class DownloadResourceHandler : public ResourceHandler {
 
   void set_content_disposition(const std::string& content_disposition);
 
+  // Request had a network error, and a new request must be issued. Should be
+  // used only by |ResourceDispatcherHost::BeginDownload()|.
+  void set_was_interrupted(bool interrupted) { was_interrupted_ = interrupted; }
+
+  // How many bytes were read before this request was interrupted. Should be
+  // used only by |ResourceDispatcherHost::BeginDownload()|.
+  void set_interrupted_bytes(int64 bytes) { interrupted_bytes_ = bytes; }
+
   void CheckWriteProgress();
 
   std::string DebugString() const;
@@ -103,6 +112,8 @@ class DownloadResourceHandler : public ResourceHandler {
   bool is_paused_;
   base::OneShotTimer<DownloadResourceHandler> pause_timer_;
   base::TimeTicks download_start_time_;  // used to collect stats.
+  bool was_interrupted_;
+  int64 interrupted_bytes_;
   static const int kReadBufSize = 32768;  // bytes
   static const size_t kLoadsToWrite = 100;  // number of data buffers queued
   static const int kThrottleTimeMs = 200;  // milliseconds