Remove CreateRenderFrameFlags enum.

content/browser/frame_host/render_frame_host_factory.h

Index: content/browser/frame_host/render_frame_host_factory.h
diff --git a/content/browser/frame_host/render_frame_host_factory.h b/content/browser/frame_host/render_frame_host_factory.h
index 1b2fdc3aa4be355cccee1f95c42357c2373742e3..d6eb4908e165c433f38c4d6b688bd1e896882317 100644
--- a/content/browser/frame_host/render_frame_host_factory.h
+++ b/content/browser/frame_host/render_frame_host_factory.h
@@ -37,7 +37,7 @@ class CONTENT_EXPORT RenderFrameHostFactory {
       FrameTreeNode* frame_tree_node,
       int32_t routing_id,
       int32_t widget_routing_id,
-      int flags);
+      bool hidden);
 
   // Returns true if there is currently a globally-registered factory.
   static bool has_factory() { return !!factory_; }
@@ -57,7 +57,7 @@ class CONTENT_EXPORT RenderFrameHostFactory {
       FrameTreeNode* frame_tree_node,
       int32_t routing_id,
       int32_t widget_routing_id,
-      int flags) = 0;
+      bool hidden) = 0;
 
   // Registers a factory to be called when new RenderFrameHostImpls are created.
   // We have only one global factory, so there must be no factory registered