Truncate the download file name if it exceeds the filesystem limit.

base/sys_info.h

Index: base/sys_info.h
diff --git a/base/sys_info.h b/base/sys_info.h
index 97b17c4a0afd6db7ca1fbaab638faeb3615dbbd7..cff8c4708199c859c0d965812a5f278e6266c5fd 100644
--- a/base/sys_info.h
+++ b/base/sys_info.h
@@ -35,6 +35,10 @@ class BASE_EXPORT SysInfo {
   // or -1 on failure.
   static int64 AmountOfFreeDiskSpace(const FilePath& path);
 
+  // Return the maximum length of path component on the volume containing
+  // |path|, in the number of FilePath::CharType, or -1 on failure.
+  static int GetMaximumPathComponentLength(const FilePath& path);

[asanka, 2013/02/12 20:20:12]

Why in sys_info.h? Have you considered putting this in file_util.h?

[kinaba, 2013/02/14 04:52:47]

Fm, sounds better. Done.

+
   // Returns system uptime in milliseconds.
   static int64 Uptime();