Coverity: tips_cache_->GetSize() returns an unsigned int so the comparison >= 0 is always true.  Change the check to != 0 to actually have an effect.
Coverity: tips_cache_->GetSize() returns an unsigned int so the comparison >= 0 is always true.  Change the check to != 0 to actually have an effect.

CID=6044
BUG=none
TEST=none
Review URL: http://codereview.chromium.org/255030

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@27662 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