Leaks in GetWebKitPrefs on CrOS

Suppresses leak in GetWebkitPrefs occurring on CrOS Valgrind bot.  Generalizing an existing suppression.

BUG=90400
TEST=Tests go green on CrOS Valgrind bot.
TBR=glider@chromium.org

Review URL: http://codereview.chromium.org/7529040

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@95943 0039d316-1c4b-4281-b951-d872f2087c98

tools/valgrind/memcheck/suppressions.txt

@@ -4962,8 +4962,8 @@
    Memcheck:Leak
    fun:_Znw*
    fun:_ZN11ProfileImpl24GetUserStyleSheetWatcherEv
-   fun:_ZN28RenderViewHostDelegateHelper14GetWebkitPrefsEP7Profileb
-   fun:_ZN6chrome26ChromeContentBrowserClient14GetWebkitPrefsEP7Profileb
+   fun:_ZN28RenderViewHostDelegateHelper14GetWebkitPrefs*
+   fun:_ZN6chrome26ChromeContentBrowserClient14GetWebkitPrefs*
    fun:_ZN11TabContents14GetWebkitPrefsEv
 }
 {