Merge 22814 - Fix for an "update in progress" DCHECK....

Merge 22814 - Fix for an "update in progress" DCHECK.

A DCHECK in SafeBrowsingService::UpdateStarted can potentially be
triggered if there is an error opening the database for reading,
or if there is no response from the server for a update request.
Both of these cases can cause our 'update_in_progress_' flag to
not be reset properly before the next update.

This CL adds:
 a timeout for update responses
 better handling for database errors
that properly resets the update state.

BUG=12835
(http://crbug.com/12835)
TEST=None.

Review URL: http://codereview.chromium.org/165008

TBR=paul@chromium.org


Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=23281

[Paul Godavari, 2009-08-13 05:27:37]

LGTM