Implement <appview>

chrome/browser/guest_view/guest_view_manager.h

Index: chrome/browser/guest_view/guest_view_manager.h
diff --git a/chrome/browser/guest_view/guest_view_manager.h b/chrome/browser/guest_view/guest_view_manager.h
index 4e13efa4c662e2b4088998ee389d88833c8ae1dc..342dcde60b6b8f96b1fba9de20a16036645a312d 100644
--- a/chrome/browser/guest_view/guest_view_manager.h
+++ b/chrome/browser/guest_view/guest_view_manager.h
@@ -14,6 +14,7 @@
 #include "content/public/browser/site_instance.h"
 #include "content/public/browser/web_contents.h"
 
+class AppViewGuest;
 class GuestViewBase;
 class GuestViewManagerFactory;
 class GuestWebContentsObserver;
@@ -78,6 +79,7 @@ class GuestViewManager : public content::BrowserPluginGuestManager,
                             const GuestCallback& callback) OVERRIDE;
 
  protected:
+  friend class AppViewGuest;
   friend class GuestViewBase;
   friend class GuestWebContentsObserver;
   friend class guestview::TestGuestViewManager;
@@ -89,9 +91,7 @@ class GuestViewManager : public content::BrowserPluginGuestManager,
 
   void RemoveGuest(int guest_instance_id);
 
-  content::WebContents* GetGuestByInstanceID(
-      int guest_instance_id,
-      int embedder_render_process_id);
+  content::WebContents* GetGuestByInstanceID(int guest_instance_id);
 
   bool CanEmbedderAccessInstanceIDMaybeKill(
       int embedder_render_process_id,