Revert of Upgrade insecure requests: Pipe navigational hosts down into nested documents.

Source/core/fetch/ResourceFetcherTest.cpp

Index: Source/core/fetch/ResourceFetcherTest.cpp
diff --git a/Source/core/fetch/ResourceFetcherTest.cpp b/Source/core/fetch/ResourceFetcherTest.cpp
index a935d446079a9d69630662f142e89bed1a53e10d..f2ed228bcd6191885f06b1231729369f01510fa0 100644
--- a/Source/core/fetch/ResourceFetcherTest.cpp
+++ b/Source/core/fetch/ResourceFetcherTest.cpp
@@ -154,7 +154,8 @@
     document->setInsecureRequestsPolicy(SecurityContext::InsecureRequestsUpgrade);
 
     for (auto test : tests) {
-        document->insecureNavigationsToUpgrade()->clear();
+        // secureOrigin's host is 'secureorigin.test', not 'example.test'
+        document->setSecurityOrigin(secureOrigin);
 
         // We always upgrade for FrameTypeNone and FrameTypeNested.
         expectUpgrade(test.original, WebURLRequest::RequestContextScript, WebURLRequest::FrameTypeNone, test.upgraded);
@@ -168,8 +169,8 @@
         expectUpgrade(test.original, WebURLRequest::RequestContextForm, WebURLRequest::FrameTypeTopLevel, test.upgraded);
         expectUpgrade(test.original, WebURLRequest::RequestContextForm, WebURLRequest::FrameTypeAuxiliary, test.upgraded);
 
-        // Or unless the host of the resource is in the document's InsecureNavigationsSet:
-        document->addInsecureNavigationUpgrade(exampleOrigin->host());
+        // Or unless the host of the document matches the host of the resource:
+        document->setSecurityOrigin(exampleOrigin);
         expectUpgrade(test.original, WebURLRequest::RequestContextScript, WebURLRequest::FrameTypeTopLevel, test.upgraded);
         expectUpgrade(test.original, WebURLRequest::RequestContextScript, WebURLRequest::FrameTypeAuxiliary, test.upgraded);
     }