Disk Cache: Implement GetAvailableRange for the regular disk cache....

Disk Cache: Implement GetAvailableRange for the regular disk cache.

This is required to enable sparse caching.

BUG=12258
TEST=unittest


Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=19069

[Nicolas Sylvain, 2009-06-23 02:49:07]

http://codereview.chromium.org/146005/diff/1/4
File net/disk_cache/entry_unittest.cc (right):

http://codereview.chromium.org/146005/diff/1/4#newcode1024
Line 1024: EXPECT_EQ(kSize, entry->GetAvailableRange(0, 0x2100000, &start));
why is this returning kSize? is it not returning an result code?

[rvargas (doing something else), 2009-06-23 02:59:24]

http://codereview.chromium.org/146005/diff/1/4
File net/disk_cache/entry_unittest.cc (right):

http://codereview.chromium.org/146005/diff/1/4#newcode1024
Line 1024: EXPECT_EQ(kSize, entry->GetAvailableRange(0, 0x2100000, &start));
GetAvailableRange returns the number of bytes stored from *start, or an error
code. It is OK to return a number that is lower than the real number of stored
bytes (to avoid opening extra child entries).

[Nicolas Sylvain, 2009-06-23 21:53:23]

LGTM