https://bugs.webkit.org/show_bug.cgi?id=96772

Reviewed by Gustavo Noronha Silva.

Using the C++ classes directly instead of the C API wrappers we
avoid a lot of toImpl/toAPI casts, string conversions and
allocations. The code is also a lot simpler and easier to read.

* UIProcess/API/gtk/WebKitCookieManager.cpp:
(_WebKitCookieManagerPrivate):
(webkitCookieManagerFinalize):
(webkitCookieManagerCreate):
(webkit_cookie_manager_set_persistent_storage):
(webkit_cookie_manager_set_accept_policy):
(webkit_cookie_manager_get_accept_policy):
(webkitCookieManagerGetDomainsWithCookiesCallback):
(webkit_cookie_manager_get_domains_with_cookies):
(webkit_cookie_manager_delete_cookies_for_domain):
(webkit_cookie_manager_delete_all_cookies):
* UIProcess/API/gtk/WebKitCookieManagerPrivate.h:
* UIProcess/API/gtk/WebKitWebContext.cpp:
(webkit_web_context_get_cookie_manager):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@131607 268f45cc-cd09-0410-ab3c-d52691b4dbfc