Update components/ tests to handle same-site BrowsingInstance swap

With crrev.com/c/2121522, some main-frame same-site navigations will
result in a new BrowsingInstance, SiteInstance, RenderFrameHost,
RenderView, etc. This CL updates expectations of tests under chrome/
and components/ that didn't expect a change of RenderFrameHosts etc.
on same-site navigations.

This CL does not include fixes to other tests in content/, chrome/,
and layout tests (they are fixed in other CLs).

For more details, see doc: https://docs.google.com/document/d/1lHdkKLUe8H6ZP6ALwj-dsus7oYcuc93HkSCHCcerItg/edit?usp=sharing

Bug: 977562
Change-Id: Ibb9c7e9da1a8d743c57a0a16c36a67e1464cf1c0
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2210605
Commit-Queue: Rakina Zata Amni <rakina@chromium.org>
Reviewed-by: Alex Moshchuk <alexmos@chromium.org>
Reviewed-by: Alexander Timin <altimin@chromium.org>
Reviewed-by: Matt Menke <mmenke@chromium.org>
Cr-Commit-Position: refs/heads/master@{#775033}

components/captive_portal/content/captive_portal_tab_helper_unittest.cc

@@ -298,9 +298,19 @@ TEST_F(CaptivePortalTabHelperTest, UnexpectedProvisionalLoad) {
   cross_process_navigation->CommitErrorPage();
 }
 
-// Similar to the above test, except the original RenderViewHost manages to
+// Similar to the above test, except the original RenderFrameHost manages to
 // commit before its navigation is aborted.
 TEST_F(CaptivePortalTabHelperTest, UnexpectedCommit) {
+  if (content::CanSameSiteMainFrameNavigationsChangeRenderFrameHosts()) {
+    // When ProactivelySwapBrowsingInstance or RenderDocument is enabled on
+    // same-site main-frame navigations, the same-site navigation below will
+    // create a pending RenderFrameHost, which will be deleted when a cross-site
+    // navigation starts (because it also creates a pending RenderFrameHost).
+    // This means the case we wanted for this test is not possible with
+    // ProactivelySwapBrowsingInstance or RenderDocument, so we should just skip
+    // this test.
+    return;
+  }
   GURL same_site_url = GURL(kHttpUrl);
   GURL cross_process_url = GURL(kHttpsUrl2);