Adding MimeHandlerView.

extensions/browser/guest_view/guest_view_manager.h

Index: extensions/browser/guest_view/guest_view_manager.h
diff --git a/extensions/browser/guest_view/guest_view_manager.h b/extensions/browser/guest_view/guest_view_manager.h
index a82aebc035f5c5a99ca2060553edf6b12ef54e12..e80d25d5184f7bc79da0c04c6314deeb5cad37cd 100644
--- a/extensions/browser/guest_view/guest_view_manager.h
+++ b/extensions/browser/guest_view/guest_view_manager.h
@@ -86,6 +86,13 @@ class GuestViewManager : public content::BrowserPluginGuestManager,
       const GuestByInstanceIDCallback& callback) OVERRIDE;
   virtual bool ForEachGuest(content::WebContents* embedder_web_contents,
                             const GuestCallback& callback) OVERRIDE;
+  virtual void CreateMimeHandlerViewGuest(
+      int render_process_id,
+      int render_frame_id,
+      const std::string& url,
+      const std::string& mime_type,
+      int element_instance_id) OVERRIDE;
+
  protected:
   friend class GuestViewBase;
   FRIEND_TEST_ALL_PREFIXES(GuestViewManagerTest, AddRemove);
@@ -111,6 +118,12 @@ class GuestViewManager : public content::BrowserPluginGuestManager,
   // from this manager using RemoveGuest.
   bool CanUseGuestInstanceID(int guest_instance_id);
 
+  void OnMimeHandlerViewGuestCreated(int element_id,
+                                     int embedder_render_process_id,
+                                     int embedder_routing_id,
+                                     const std::string& src,
+                                     content::WebContents* web_contents);
+
   // Static factory instance (always NULL for non-test).
   static GuestViewManagerFactory* factory_;