[webkit-changes] [WebKit/WebKit] 3a7682: Implement postMessage for site-isolated iframes af...

[Alex Christensen]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: 3a7682ec22d5425edc3464a5be2d48df538ef312
      https://github.com/WebKit/WebKit/commit/3a7682ec22d5425edc3464a5be2d48df538ef312
  Author: Alex Christensen <achristensen at apple.com>
  Date:   2023-07-24 (Mon, 24 Jul 2023)

  Changed paths:
    M Source/WebCore/page/Page.cpp
    M Source/WebCore/page/PageConfiguration.cpp
    M Source/WebCore/page/PageConfiguration.h
    M Source/WebCore/page/RemoteDOMWindow.cpp
    M Source/WebCore/page/RemoteFrame.cpp
    M Source/WebCore/page/RemoteFrame.h
    M Source/WebCore/page/RemoteFrameClient.h
    M Source/WebKit/Shared/FrameTreeCreationParameters.h
    M Source/WebKit/Shared/FrameTreeCreationParameters.serialization.in
    M Source/WebKit/UIProcess/ProvisionalPageProxy.cpp
    M Source/WebKit/UIProcess/WebFrameProxy.cpp
    M Source/WebKit/UIProcess/WebPageProxy.cpp
    M Source/WebKit/UIProcess/WebProcessProxy.cpp
    M Source/WebKit/UIProcess/WebProcessProxy.h
    M Source/WebKit/UIProcess/WebProcessProxy.messages.in
    M Source/WebKit/WebProcess/WebCoreSupport/WebRemoteFrameClient.cpp
    M Source/WebKit/WebProcess/WebCoreSupport/WebRemoteFrameClient.h
    M Source/WebKit/WebProcess/WebPage/WebFrame.cpp
    M Source/WebKit/WebProcess/WebPage/WebFrame.h
    M Source/WebKit/WebProcess/WebPage/WebPage.cpp
    M Source/WebKit/WebProcess/WebPage/WebPage.h
    M Source/WebKit/WebProcess/WebPage/WebPage.messages.in
    M Source/WebKit/WebProcess/WebProcess.messages.in
    M Tools/TestWebKitAPI/Tests/WebKitCocoa/SiteIsolation.mm

  Log Message:
  -----------
  Implement postMessage for site-isolated iframes after cross-origin navigation
https://bugs.webkit.org/show_bug.cgi?id=259423
rdar://112719991

Reviewed by Tim Nguyen.

Broadcasting process identifier updates when an iframe changes processes
would necessarily introduce a point of time where messages could be dropped because
updates hadn't been received in the sending web content processes.  Rather than
trying to keep that information up to date in all web content processes, use the UI
process as the source of truth for what frame is in what process.  The FrameIdentifier
is therefore all the context we need when sending messages to another process.

* Source/WebCore/page/Page.cpp:
(WebCore::createMainFrame):
* Source/WebCore/page/PageConfiguration.cpp:
(WebCore::PageConfiguration::PageConfiguration):
* Source/WebCore/page/PageConfiguration.h:
* Source/WebCore/page/RemoteDOMWindow.cpp:
(WebCore::RemoteDOMWindow::postMessage):
* Source/WebCore/page/RemoteFrame.cpp:
(WebCore::RemoteFrame::createMainFrame):
(WebCore::RemoteFrame::createSubframe):
(WebCore::RemoteFrame::createSubframeWithContentsInAnotherProcess):
(WebCore::RemoteFrame::RemoteFrame):
(WebCore::m_layerHostingContextIdentifier):
(WebCore::RemoteFrame::renderTreeAsText):
(WebCore::m_remoteProcessIdentifier): Deleted.
* Source/WebCore/page/RemoteFrame.h:
* Source/WebCore/page/RemoteFrameClient.h:
* Source/WebKit/Shared/FrameTreeCreationParameters.h:
* Source/WebKit/Shared/FrameTreeCreationParameters.serialization.in:
* Source/WebKit/UIProcess/ProvisionalPageProxy.cpp:
(WebKit::ProvisionalPageProxy::didCommitLoadForFrame):
* Source/WebKit/UIProcess/WebFrameProxy.cpp:
(WebKit::WebFrameProxy::commitProvisionalFrame):
(WebKit::WebFrameProxy::frameTreeCreationParameters const):
* Source/WebKit/UIProcess/WebPageProxy.cpp:
(WebKit::WebPageProxy::createRemoteSubframesInOtherProcesses):
* Source/WebKit/UIProcess/WebProcessProxy.cpp:
(WebKit::WebProcessProxy::postMessageToRemote):
(WebKit::WebProcessProxy::renderTreeAsText):
* Source/WebKit/UIProcess/WebProcessProxy.h:
* Source/WebKit/UIProcess/WebProcessProxy.messages.in:
* Source/WebKit/WebProcess/WebCoreSupport/WebRemoteFrameClient.cpp:
(WebKit::WebRemoteFrameClient::postMessageToRemote):
(WebKit::WebRemoteFrameClient::renderTreeAsText):
* Source/WebKit/WebProcess/WebCoreSupport/WebRemoteFrameClient.h:
* Source/WebKit/WebProcess/WebPage/WebFrame.cpp:
(WebKit::WebFrame::createRemoteSubframe):
(WebKit::WebFrame::didCommitLoadInAnotherProcess):
* Source/WebKit/WebProcess/WebPage/WebFrame.h:
* Source/WebKit/WebProcess/WebPage/WebPage.cpp:
(WebKit::clientForMainFrame):
(WebKit::m_appHighlightsVisible):
(WebKit::WebPage::constructFrameTree):
(WebKit::WebPage::createRemoteSubframe):
(WebKit::WebPage::didCommitLoadInAnotherProcess):
* Source/WebKit/WebProcess/WebPage/WebPage.h:
* Source/WebKit/WebProcess/WebPage/WebPage.messages.in:
* Source/WebKit/WebProcess/WebProcess.messages.in:
* Tools/TestWebKitAPI/Tests/WebKitCocoa/SiteIsolation.mm:
(TestWebKitAPI::TEST):

Canonical link: https://commits.webkit.org/266266@main