Preliminary work on resuming downloads whose connections have expired.

chrome/browser/download/base_file.h

Index: chrome/browser/download/base_file.h
diff --git a/chrome/browser/download/base_file.h b/chrome/browser/download/base_file.h
index 6c57165d5949c7fa149a39d01aef11830b46a696..c38b909862b7f3dc1b7d1f97b2b574a831a7bd63 100644
--- a/chrome/browser/download/base_file.h
+++ b/chrome/browser/download/base_file.h
@@ -27,6 +27,7 @@ class BaseFile {
   ~BaseFile();
 
   bool Initialize();
+  bool ReOpen();

[Paweł Hajdan Jr., 2010/10/01 09:03:55]

Please add comment.

 
   // Write a new chunk of data to the file. Returns true on success (all bytes
   // written to the file).
@@ -51,6 +52,9 @@ class BaseFile {
   bool in_progress() const { return file_stream_ != NULL; }
   int64 bytes_so_far() const { return bytes_so_far_; }
 
+  // Determines if this DownloadItem matches the |url| and |path|.
+  bool MatchesUrlAndPath(const GURL& url, const FilePath& path) const;

[Paweł Hajdan Jr., 2010/10/01 09:03:55]

This is wrong, as said in http://codereview.chromium.org/3273013/show

+
  protected:
   bool Open();
   void Close();