Revert 147309 - Annotate calls to SQLite functions - they have to be executed on a thread allowing …

Revert 147309 - Annotate calls to SQLite functions - they have to be executed on a thread allowing IO access.

Expand scope of ScopedAllowIO in the only place where SQLite functions are used on UI thread.

Patch from Pavel Ivanov <paivanof@gmail.com>;

BUG=75232, 52909, 137961
TEST=no test fails with message "Function marked as IO-only was called from a thread that disallows IO!"

Review URL: https://chromiumcodereview.appspot.com/10540155
Patch from Pavel Ivanov <paivanof@gmail.com>;.

TBR=shess@chromium.org
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=147340