[sql] Remove part of WebDatabase SQLite patch.
findReusableFd() calls stat() on the filename to determine the inode
and device to figure out if a previously-closed file descriptor can be
reused. Since WebDatabase file names are resolved by the browser,
this stat() can never succeed in the renderer, thus there is no point
to calling the function.
This SQLite code path is an optimization to reduce close/open churn,
it is not necessary for correct operation.
BUG=none
Review URL: https://codereview.chromium.org/1473963002
Cr-Commit-Position: refs/heads/master@{#361825}
6 files changed
