Clear search filter when the dialog is displayed.
Clear search filter when the dialog is displayed.

BUG=78204
TEST=Open the settings page and exapnd to show advanced settings.  Select "Content settings" under Privacy and "All cookies and site data".  Enter text into the "search cookies" box.  Close and reopen the dialog.  The filter should be reset.


Review URL: http://codereview.chromium.org/9956174

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@132632 0039d316-1c4b-4281-b951-d872f2087c98

yitian134/chromium,ropik/chromium,adobe/chromium,adobe/chromium,adobe/chromium,adobe/chromium,ropik/chromium,yitian134/chromium,adobe/chromium,ropik/chromium,yitian134/chromium,adobe/chromium,yitian134/chromium,adobe/chromium,ropik/chromium,ropik/chromium,yitian134/chromium,yitian134/chromium,ropik/chromium,yitian134/chromium,adobe/chromium,yitian134/chromium,adobe/chromium,ropik/chromium,yitian134/chromium,yitian134/chromium,ropik/chromium,adobe/chromium,ropik/chromium,adobe/chromium