Plumb the correct owner document through DocumentInit::m_owner.

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

Index: third_party/WebKit/Source/core/dom/RemoteSecurityContext.cpp
diff --git a/third_party/WebKit/Source/core/dom/RemoteSecurityContext.cpp b/third_party/WebKit/Source/core/dom/RemoteSecurityContext.cpp
index eaa158dd22c2dd05a823056b4642be33d7eaf60c..669ea430a335ce8c10229ab4d127268318952960 100644
--- a/third_party/WebKit/Source/core/dom/RemoteSecurityContext.cpp
+++ b/third_party/WebKit/Source/core/dom/RemoteSecurityContext.cpp
@@ -14,7 +14,7 @@ RemoteSecurityContext::RemoteSecurityContext()
 {
     // RemoteSecurityContext's origin is expected to stay uninitialized until
     // we set it using replicated origin data from the browser process.
-    ASSERT(!haveInitializedSecurityOrigin());
+    ASSERT(!securityOrigin());
 
     // CSP will not be replicated for RemoteSecurityContexts, as it is moving
     // to the browser process.  For now, initialize CSP to a default