GuestView: Lazy registration and once for all profiles

chrome/browser/guest_view/guest_view_base.h

Index: chrome/browser/guest_view/guest_view_base.h
diff --git a/chrome/browser/guest_view/guest_view_base.h b/chrome/browser/guest_view/guest_view_base.h
index d8ee1a0a6facf40d6c494b60611b37e09b74af23..1ca4dde4d98c3fde10917aca07227872bbc5f5c2 100644
--- a/chrome/browser/guest_view/guest_view_base.h
+++ b/chrome/browser/guest_view/guest_view_base.h
@@ -52,8 +52,6 @@ class GuestViewBase : public content::BrowserPluginGuestDelegate,
     return NULL;
   }
 
-  static void RegisterGuestViewTypes();
-
   typedef base::Callback<GuestViewBase*(
       content::BrowserContext*, int)> GuestCreationCallback;
   static void RegisterGuestViewType(const std::string& view_type,
@@ -236,6 +234,8 @@ class GuestViewBase : public content::BrowserPluginGuestDelegate,
                     const WebContentsCreatedCallback& callback,
                     content::WebContents* guest_web_contents);
 
+  static void RegisterGuestViewTypes();
+
   // WebContentsObserver implementation.
   virtual void DidStopLoading(
       content::RenderViewHost* render_view_host) OVERRIDE FINAL;