tree fa978d4b3c1bd850f03c7afbb3fc0be0c4d467da
parent 67cb6609d3696fde22b8fe81eca331d761b1987a
author wenson_hsieh@apple.com <wenson_hsieh@apple.com@268f45cc-cd09-0410-ab3c-d52691b4dbfc> 1563232171 +0000
committer wenson_hsieh@apple.com <wenson_hsieh@apple.com@268f45cc-cd09-0410-ab3c-d52691b4dbfc> 1563232171 +0000

Followup to r247439
https://bugs.webkit.org/show_bug.cgi?id=199788
<rdar://problem/52142570>

Reviewed by Tim Horton.

As it turns out, sending modern async completion-handler based IPC messages while processing incoming sync
messages results in a debug assertion. Instead of migrating FontAtSelection to the new async IPC mechanism,
restore the older CallbackID-based async IPC.

* UIProcess/WebPageProxy.h:
* UIProcess/WebPageProxy.messages.in:
* UIProcess/mac/WebPageProxyMac.mm:
(WebKit::WebPageProxy::fontAtSelection):
(WebKit::WebPageProxy::fontAtSelectionCallback):
* WebProcess/WebPage/WebPage.h:
* WebProcess/WebPage/WebPage.messages.in:
* WebProcess/WebPage/mac/WebPageMac.mm:
(WebKit::WebPage::fontAtSelection):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@247460 268f45cc-cd09-0410-ab3c-d52691b4dbfc