Make RenderFrame(Host) own a RenderWidget(Host).

content/renderer/render_widget.cc

Index: content/renderer/render_widget.cc
diff --git a/content/renderer/render_widget.cc b/content/renderer/render_widget.cc
index c17cd7eb9af3a64a9427af230af6778ecd066faf..69f95386d1995af340ca2f4aea4627bad24d626f 100644
--- a/content/renderer/render_widget.cc
+++ b/content/renderer/render_widget.cc
@@ -449,6 +449,28 @@ RenderWidget* RenderWidget::Create(int32 opener_id,
 }
 
 // static
+RenderWidget* RenderWidget::CreateForFrame(
+    int routing_id,
+    bool hidden,
+    const blink::WebScreenInfo& screen_info) {
+  DCHECK(routing_id != MSG_ROUTING_NONE);
+  scoped_refptr<RenderWidget> widget(
+      new RenderWidget(blink::WebPopupTypeNone,
+                       screen_info,
+                       false,
+                       hidden,
+                       false));
+  widget->routing_id_ = routing_id;
+  //TODO(kenrb): Change CreateWebWidget to CreateWebFrameWidget before landing!
+  if (widget->DoInit(MSG_ROUTING_NONE,
+                     RenderWidget::CreateWebWidget(widget.get()),
+                     nullptr)) {
+    return widget.get();
+  }
+  return NULL;
+}
+
+// static
 WebWidget* RenderWidget::CreateWebWidget(RenderWidget* render_widget) {
   switch (render_widget->popup_type_) {
     case blink::WebPopupTypeNone:  // Nothing to create.
@@ -481,7 +503,10 @@ bool RenderWidget::DoInit(int32 opener_id,
 
   webwidget_ = web_widget;
 
-  bool result = RenderThread::Get()->Send(create_widget_message);
+  bool result = true;
+  if (create_widget_message)
+    result = RenderThread::Get()->Send(create_widget_message);
+
   if (result) {
     RenderThread::Get()->AddRoute(routing_id_, this);
     // Take a reference on behalf of the RenderThread.  This will be balanced