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

Source/core/loader/FrameLoader.cpp

Index: Source/core/loader/FrameLoader.cpp
diff --git a/Source/core/loader/FrameLoader.cpp b/Source/core/loader/FrameLoader.cpp
index f9b9cce6a50dacf236cd71abb323dc753506f09d..d3329c11bc3171ea1385b6f9848fa45dbeb8ce46 100644
--- a/Source/core/loader/FrameLoader.cpp
+++ b/Source/core/loader/FrameLoader.cpp
@@ -1417,7 +1417,23 @@ SecurityContext::InsecureRequestsPolicy FrameLoader::insecureRequestsPolicy() co
     if (!parentFrame->isLocalFrame())
         return SecurityContext::InsecureRequestsDoNotUpgrade;
 
+    ASSERT(toLocalFrame(parentFrame)->document());
     return toLocalFrame(parentFrame)->document()->insecureRequestsPolicy();
 }
 
+SecurityContext::InsecureNavigationsSet* FrameLoader::insecureNavigationsToUpgrade() const
+{
+    ASSERT(m_frame);
+    Frame* parentFrame = m_frame->tree().parent();
+    if (!parentFrame)
+        return nullptr;
+
+    // FIXME: We need a way to propagate insecure requests policy flags to
+    // out-of-process frames. For now, we'll always use default behavior.
+    if (!parentFrame->isLocalFrame())
+        return nullptr;
+
+    return toLocalFrame(parentFrame)->document()->insecureNavigationsToUpgrade();

[Yoav Weiss, 2015/03/18 09:48:35]

Yeah, obviously parentFrame should have a document. That's what 3 hour of sleep
nights get you... :)

Can you add an ASSERT above this line as well? 

+}
+
 } // namespace blink