Plumb initiator out of Blink.

third_party/WebKit/Source/web/RemoteFrameClientImpl.cpp

Index: third_party/WebKit/Source/web/RemoteFrameClientImpl.cpp
diff --git a/third_party/WebKit/Source/web/RemoteFrameClientImpl.cpp b/third_party/WebKit/Source/web/RemoteFrameClientImpl.cpp
index b9ec594177fd3ae694a591c694ee944c533ea989..d0ab01430d73d1ca46d932ca1a8b66139cf66376 100644
--- a/third_party/WebKit/Source/web/RemoteFrameClientImpl.cpp
+++ b/third_party/WebKit/Source/web/RemoteFrameClientImpl.cpp
@@ -101,11 +101,16 @@ void RemoteFrameClientImpl::frameFocused() const {
     m_webFrame->client()->frameFocused();
 }
 
-void RemoteFrameClientImpl::navigate(const ResourceRequest& request,
+void RemoteFrameClientImpl::navigate(Document* originDocument,
+                                     const ResourceRequest& request,
                                      bool shouldReplaceCurrentEntry) {
-  if (m_webFrame->client())
-    m_webFrame->client()->navigate(WrappedResourceRequest(request),
-                                   shouldReplaceCurrentEntry);
+  if (m_webFrame->client()) {
+    // Detached documents shouldn't be navigating.
+    DCHECK(!originDocument || originDocument->frame());
+    m_webFrame->client()->navigate(
+        WebLocalFrameImpl::fromFrame(originDocument->frame()),
+        WrappedResourceRequest(request), shouldReplaceCurrentEntry);
+  }
 }
 
 void RemoteFrameClientImpl::reload(FrameLoadType loadType,