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

content/browser/frame_host/render_frame_host_manager.h

Index: content/browser/frame_host/render_frame_host_manager.h
diff --git a/content/browser/frame_host/render_frame_host_manager.h b/content/browser/frame_host/render_frame_host_manager.h
index 48a5f24b6f4e79f999567b0770c82fd6565c22ae..c6dcd69cb88b94fcfa183a1760609a8a42a1542c 100644
--- a/content/browser/frame_host/render_frame_host_manager.h
+++ b/content/browser/frame_host/render_frame_host_manager.h
@@ -44,6 +44,14 @@ class TestWebContents;
 class WebUIImpl;
 struct NavigationBeforeCommitInfo;
 
+// Flag arguments for RenderFrameHostManager::CreateRenderFrame.
+enum CreateRenderFrameFlags {
+  SWAPPED_OUT = 1 << 0,

[Charlie Reis, 2014/10/01 17:01:09]

We typically comment each member of the enum here, rather than in the function
declaration.

[kenrb, 2014/10/01 19:27:51]

Comments added.

+  FOR_MAIN_FRAME_NAVIGATION = 1 << 1,
+  HIDDEN = 1 << 2,
+  CREATE_RENDER_WIDGET_HOST = 1 << 3
+};
+
 // Manages RenderFrameHosts for a FrameTreeNode.  This class acts as a state
 // machine to make cross-process navigations in a frame possible.
 class CONTENT_EXPORT RenderFrameHostManager : public NotificationObserver {
@@ -256,9 +264,7 @@ class CONTENT_EXPORT RenderFrameHostManager : public NotificationObserver {
   // Returns the routing id of the *view* associated with the frame.
   int CreateRenderFrame(SiteInstance* instance,
                         int opener_route_id,
-                        bool swapped_out,
-                        bool for_main_frame_navigation,
-                        bool hidden);
+                        int flags);
 
   // Helper method to create and initialize a RenderFrameProxyHost and return
   // its routing id.