Remove the force_session cookie option, as it's not used anymore

chrome/browser/ui/cocoa/content_settings/cookie_details.mm

Index: chrome/browser/ui/cocoa/content_settings/cookie_details.mm
diff --git a/chrome/browser/ui/cocoa/content_settings/cookie_details.mm b/chrome/browser/ui/cocoa/content_settings/cookie_details.mm
index 1b2a767f89395044c6c4e472ff04efad0ddffdeb..c36d084a28bd0358709cba80b07082082fd631b2 100644
--- a/chrome/browser/ui/cocoa/content_settings/cookie_details.mm
+++ b/chrome/browser/ui/cocoa/content_settings/cookie_details.mm
@@ -121,14 +121,14 @@
    canEditExpiration:(BOOL)canEditExpiration {
   if ((self = [super init])) {
     type_ = kCocoaCookieDetailsTypeCookie;
-    hasExpiration_ = cookie->DoesExpire();
+    hasExpiration_ = cookie->IsPersistent();
     canEditExpiration_ = canEditExpiration && hasExpiration_;
     name_.reset([base::SysUTF8ToNSString(cookie->Name()) retain]);
     content_.reset([base::SysUTF8ToNSString(cookie->Value()) retain]);
     path_.reset([base::SysUTF8ToNSString(cookie->Path()) retain]);
     domain_.reset([origin retain]);
 
-    if (cookie->DoesExpire()) {
+    if (cookie->IsPersistent()) {
       expires_.reset([base::SysUTF16ToNSString(
           base::TimeFormatFriendlyDateAndTime(cookie->ExpiryDate())) retain]);
     } else {