Preserve page resize information when main frame is remote

third_party/WebKit/Source/web/tests/WebFrameTest.cpp

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 7003 matching lines @@
     FrameTestHelpers::loadFrame(localFrame, m_baseURL + "subframe-hello.html");
     std::string content = localFrame->contentAsText(1024).utf8();
     EXPECT_EQ("hello", content);
 
     // Manually reset to break WebViewHelper's dependency on the stack allocated
     // TestWebFrameClient.
     reset();
     remoteFrame->close();
 }
 
+TEST_F(WebFrameSwapTest, ValidateSizeOnRemoteToLocalMainFrameSwap)
+{
+    WebSize size(111, 222);
+
+    WebRemoteFrame* remoteFrame = WebRemoteFrame::create(WebTreeScopeType::Document, nullptr);
+    mainFrame()->swap(remoteFrame);
+
+    remoteFrame->view()->resize(size);
+
+    FrameTestHelpers::TestWebFrameClient client;
+    WebLocalFrame* localFrame = WebLocalFrame::createProvisional(&client, remoteFrame, WebSandboxFlags::None, WebFrameOwnerProperties());
+    remoteFrame->swap(localFrame);
+
+    // Verify that the size that was set with a remote main frame is correct
+    // after swapping to a local frame.
+    FrameHost* host = toWebViewImpl(localFrame->view())->page()->mainFrame()->host();
+    EXPECT_EQ(size.width, host->visualViewport().size().width());
+    EXPECT_EQ(size.height, host->visualViewport().size().height());
+
+    // Manually reset to break WebViewHelper's dependency on the stack allocated
+    // TestWebFrameClient.
+    reset();
+    remoteFrame->close();
+}
+
 namespace {
 
 class SwapMainFrameWhenTitleChangesWebFrameClient : public FrameTestHelpers::TestWebFrameClient {
 public:
     SwapMainFrameWhenTitleChangesWebFrameClient()
         : m_remoteFrame(nullptr)
     {
     }
 
     ~SwapMainFrameWhenTitleChangesWebFrameClient() override
@@ skipping 1317 matching lines @@
 
 TEST_F(WebFrameTest, CallbackOrdering)
 {
     registerMockedHttpURLLoad("foo.html");
     FrameTestHelpers::WebViewHelper webViewHelper;
     CallbackOrderingWebFrameClient client;
     webViewHelper.initializeAndLoad(m_baseURL + "foo.html", true, &client);
 }
 
 } // namespace blink