Set the cookie acceptance policy of @cookie_manager as @policy.
Note that ITP has its own way to handle third-party cookies, so when it's enabled,
and @policy is set to %WEBKIT_COOKIE_POLICY_ACCEPT_NO_THIRD_PARTY, %WEBKIT_COOKIE_POLICY_ACCEPT_ALWAYS
will be used instead. Once disabled, the policy will be set back to %WEBKIT_COOKIE_POLICY_ACCEPT_NO_THIRD_PARTY.
See also webkit_website_data_manager_set_itp_enabled().
Set the cookie acceptance policy of @cookie_manager as @policy. Note that ITP has its own way to handle third-party cookies, so when it's enabled, and @policy is set to %WEBKIT_COOKIE_POLICY_ACCEPT_NO_THIRD_PARTY, %WEBKIT_COOKIE_POLICY_ACCEPT_ALWAYS will be used instead. Once disabled, the policy will be set back to %WEBKIT_COOKIE_POLICY_ACCEPT_NO_THIRD_PARTY. See also webkit_website_data_manager_set_itp_enabled().