[safe browsing] Remove most filename storage in database object.

[safe browsing] Remove most filename storage in database object.

Instead of storing full copies of every backing file's path, re-generate
the paths as needed.

BUG=none

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=278605

[Scott Hess - ex-Googler, 2014-06-18 22:07:17]

https://codereview.chromium.org/340893003/diff/1/chrome/browser/safe_browsing...
File chrome/browser/safe_browsing/safe_browsing_database.cc (right):

https://codereview.chromium.org/340893003/diff/1/chrome/browser/safe_browsing...
chrome/browser/safe_browsing/safe_browsing_database.cc:594: false);
https://codereview.chromium.org/341553006/ adds this DeleteFile() line, so I'll
land this after that.

[mattm, 2014-06-18 22:43:59]

lgtm

[Scott Hess - ex-Googler, 2014-06-19 19:39:29]

The CQ bit was checked by shess@chromium.org

[commit-bot: I haz the power, 2014-06-19 19:41:03]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/shess@chromium.org/340893003/20001

[commit-bot: I haz the power, 2014-06-20 01:00:11]

FYI, CQ is re-trying this CL (attempt #1).
The failing builders are:
  android_aosp on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/android_aosp/builds/8...)

[commit-bot: I haz the power, 2014-06-20 05:04:04]

Change committed as 278605