Force MimeHandlerView to always use BrowserPlugin

content/browser/browser_plugin/browser_plugin_guest.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // A BrowserPluginGuest is the browser side of a browser <--> embedder
 // renderer channel. A BrowserPlugin (a WebPlugin) is on the embedder
 // renderer side of browser <--> embedder renderer communication.
 //
 // BrowserPluginGuest lives on the UI thread of the browser process. Any
 // messages about the guest render process that the embedder might be interested
@@ skipping 235 matching lines @@
 
   // Find the given |search_text| in the page. Returns true if the find request
   // is handled by this browser plugin guest.
   bool HandleFindForEmbedder(int request_id,
                              const base::string16& search_text,
                              const blink::WebFindOptions& options);
   bool HandleStopFindingForEmbedder(StopFindAction action);
 
   void ResendEventToEmbedder(const blink::WebInputEvent& event);
 
+  // TODO(ekaramad): Remove this once https://crbug.com/642826 is resolved.
+  bool can_use_cross_process_frames() const {
+    return can_use_cross_process_frames_;
+  }
+
  protected:
 
   // BrowserPluginGuest is a WebContentsObserver of |web_contents| and
   // |web_contents| has to stay valid for the lifetime of BrowserPluginGuest.
   // Constructor protected for testing.
   BrowserPluginGuest(bool has_render_view,
                      WebContentsImpl* web_contents,
                      BrowserPluginGuestDelegate* delegate);
 
   // Protected for testing.
@@ skipping 173 matching lines @@
 
   // Ignore the URL dragged into guest that is coming from guest.
   bool ignore_dragged_url_;
 
   // This is a queue of messages that are destined to be sent to the embedder
   // once the guest is attached to a particular embedder.
   std::deque<linked_ptr<IPC::Message> > pending_messages_;
 
   BrowserPluginGuestDelegate* const delegate_;
 
+  // Whether or not this BrowserPluginGuest can use cross process frames. This
+  // means when we have --use-cross-process-frames-for-guests on, the
+  // WebContents associated with this BrowserPluginGuest has OOPIF structure.
+  bool can_use_cross_process_frames_;
+
   // Weak pointer used to ask GeolocationPermissionContext about geolocation
   // permission.
   base::WeakPtrFactory<BrowserPluginGuest> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserPluginGuest);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_BROWSER_PLUGIN_BROWSER_PLUGIN_GUEST_H_