Measure resources from private IP addresses in public websites.

Source/core/loader/MixedContentChecker.cpp

Index: Source/core/loader/MixedContentChecker.cpp
diff --git a/Source/core/loader/MixedContentChecker.cpp b/Source/core/loader/MixedContentChecker.cpp
index b358b2e80b057487a892b41a99c280f9f871d3b9..00409e418bd5dec52c97c2ce510569d8d7d76988 100644
--- a/Source/core/loader/MixedContentChecker.cpp
+++ b/Source/core/loader/MixedContentChecker.cpp
@@ -34,6 +34,7 @@
 #include "core/frame/Settings.h"
 #include "core/frame/UseCounter.h"
 #include "core/inspector/ConsoleMessage.h"
+#include "core/loader/DocumentLoader.h"
 #include "core/loader/FrameLoader.h"
 #include "core/loader/FrameLoaderClient.h"
 #include "platform/RuntimeEnabledFeatures.h"
@@ -344,4 +345,19 @@ bool MixedContentChecker::checkFormAction(LocalFrame* frame, const KURL& url)
     return true;
 }
 
+void MixedContentChecker::checkMixedPrivatePublic(LocalFrame* frame, const AtomicString& resourceIPAddress)
+{
+    if (!frame || !frame->document() || !frame->document()->loader())
+        return;
+
+    KURL documentIP(ParsedURLString, "http://" + frame->document()->loader()->response().remoteIPAddress());
+    KURL resourceIP(ParsedURLString, "http://" + resourceIPAddress);
+
+    // Just count these for the moment, don't block them.
+    //
+    // FIXME: Once we know how we want to check this, adjust the platform APIs to avoid the KURL construction.
+    if (Platform::current()->isReservedIPAddress(resourceIP) && !Platform::current()->isReservedIPAddress(documentIP))
+        UseCounter::count(frame->document(), UseCounter::MixedContentPrivateHostnameInPublicHostname);
+}
+
 } // namespace blink