Suppress occasional SQL leaks in appcache::PrepareCachedStatement(). This change suppresses occasional leaks in appcache::PrepareCachedStatement(), such as <http://build.chromium.org/p/chromium.memory/builders/Chromium%20Mac%20UI%20(valgrind)(1)/builds/730/steps/memory%20test:%20ui/logs/stdio>.
Suppress occasional SQL leaks in appcache::PrepareCachedStatement().
This change suppresses occasional leaks in appcache::PrepareCachedStatement(), such as <http://build.chromium.org/p/chromium.memory/builders/Chromium%20Mac%20UI%20(valgrind)(1)/builds/730/steps/memory%20test:%20ui/logs/stdio>.

TBR=thestig,timurrrr
BUG=67261
TEST=make the "Chromium Mac UI (valgrind)(1)" bot green.
Review URL: http://codereview.chromium.org/5934003

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@69518 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser