Remove WebFrame::canHaveSecureChild

third_party/WebKit/Source/core/dom/Document.cpp

Index: third_party/WebKit/Source/core/dom/Document.cpp
diff --git a/third_party/WebKit/Source/core/dom/Document.cpp b/third_party/WebKit/Source/core/dom/Document.cpp
index 0e123a4bd445c26378da5f43e2689b6c21d2a9c0..b8bb6474ab3db3ce89ac6d5e0c8cbe212ba90fe6 100644
--- a/third_party/WebKit/Source/core/dom/Document.cpp
+++ b/third_party/WebKit/Source/core/dom/Document.cpp
@@ -3355,9 +3355,14 @@ bool Document::isSecureContextImpl(const SecureContextCheck privilegeContextChec
         return true;
 
     if (privilegeContextCheck == StandardSecureContextCheck) {
-        Frame* parent = m_frame ? m_frame->tree().parent() : nullptr;
-        if (parent && !parent->canHaveSecureChild())
-            return false;
+        if (!m_frame)
+            return true;
+        Frame* parent = m_frame->tree().parent();
+        while (parent) {
+            if (!parent->securityContext()->getSecurityOrigin()->isPotentiallyTrustworthy())
+                return false;
+            parent = parent->tree().parent();
+        }
     }
     return true;
 }