<rdar://problem/8187355>
Make titles in WebBackForwardListItems work.

Reviewed by Darin Adler.

- Make WebBackForwardListItemMap per WebProcessProxy to allow updating
  them separate from a page. They are conceptually per process anyway.
- Add a message to add or update a WebBackForwardListItemMap triggered
  by the WebCore::notifyHistoryItemChanged mechanism.

* Shared/CoreIPCSupport/WebProcessProxyMessageKinds.h:
(WebProcessProxyMessage::):
Add AddOrUpdateBackForwardItem message.

* UIProcess/WebBackForwardListItem.h:
(WebKit::WebBackForwardListItem::setOriginalURL):
(WebKit::WebBackForwardListItem::setURL):
(WebKit::WebBackForwardListItem::setTitle):
Add setters.

* UIProcess/WebPageProxy.cpp:
(WebKit::WebPageProxy::didReceiveMessage):
BackForwardAddItem now assumes the item has already been created, so
now just forwards the add message onto the WebBackForwardList.

(WebKit::WebPageProxy::addItemToBackForwardList): Take a WebBackForwardList instead of an ID.
(WebKit::WebPageProxy::goToItemInBackForwardList): Ditto.
* UIProcess/WebPageProxy.h: Ditto.

* UIProcess/WebProcessProxy.cpp:
(WebKit::WebProcessProxy::webBackForwardItem):
(WebKit::WebProcessProxy::addOrUpdateBackForwardListItem):
(WebKit::WebProcessProxy::didReceiveMessage):
(WebKit::WebProcessProxy::didReceiveSyncMessage):
* UIProcess/WebProcessProxy.h:
Have the WebProcessProxy manage the WebBackForwardListItems.

* WebProcess/WebPage/WebBackForwardListProxy.cpp:
(WebKit::updateBackForwardItem):
(WebKit::WK2NotifyHistoryItemChanged): Use this to notify UIProcess
of HistoryItem changes (such as the title being added).
(WebKit::WebBackForwardListProxy::WebBackForwardListProxy):
Register the notifyHistoryItemChanged function.
(WebKit::WebBackForwardListProxy::addItem):
Just send the ID as the updateBackForwardItem is already going to have
been called by this time.



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@63362 268f45cc-cd09-0410-ab3c-d52691b4dbfc