Allow MimeHandlerViewGuest be embedded inside OOPIFs

content/browser/browser_plugin/browser_plugin_guest.h

Index: content/browser/browser_plugin/browser_plugin_guest.h
diff --git a/content/browser/browser_plugin/browser_plugin_guest.h b/content/browser/browser_plugin/browser_plugin_guest.h
index b99654e3bc7698b25d771afc76bdbfbfad5a3335..39f00139f93f264965ea081089eb2921b36b8dd0 100644
--- a/content/browser/browser_plugin/browser_plugin_guest.h
+++ b/content/browser/browser_plugin/browser_plugin_guest.h
@@ -63,6 +63,7 @@ class Range;
 namespace content {
 
 class BrowserPluginGuestManager;
+class RenderFrameHostImpl;
 class RenderViewHostImpl;
 class RenderWidgetHost;
 class RenderWidgetHostView;
@@ -183,6 +184,7 @@ class CONTENT_EXPORT BrowserPluginGuest : public GuestHost,
   void GuestResizeDueToAutoResize(const gfx::Size& new_size) override;
   void SizeContents(const gfx::Size& new_size) override;
   void WillDestroy() override;
+  WebContents* RegisterEmbedderID(int process_id, int routing_id) override;
 
   // Exposes the protected web_contents() from WebContentsObserver.
   WebContentsImpl* GetWebContents() const;
@@ -279,6 +281,9 @@ class CONTENT_EXPORT BrowserPluginGuest : public GuestHost,
  private:
   class EmbedderVisibilityObserver;
 
+  // The RenderFrameHost embedding/containing the BrowserPlugin.
+  RenderFrameHostImpl* GetEmbedderFrame() const;
+
   void InitInternal(const BrowserPluginHostMsg_Attach_Params& params,
                     WebContentsImpl* owner_web_contents);
 
@@ -456,6 +461,10 @@ class CONTENT_EXPORT BrowserPluginGuest : public GuestHost,
   // WebContents associated with this BrowserPluginGuest has OOPIF structure.
   bool can_use_cross_process_frames_;
 
+  // Routing and process IDs of the embedder frame.
+  int embedder_process_id_;
+  int embedder_routing_id_;
+
   // Weak pointer used to ask GeolocationPermissionContext about geolocation
   // permission.
   base::WeakPtrFactory<BrowserPluginGuest> weak_ptr_factory_;