Allow MimeHandlerViewGuest be embedded inside OOPIFs

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 47 matching lines @@
 
 namespace gfx {
 class Range;
 }  // namespace gfx
 
 namespace content {
 
 class BrowserPluginGuestManager;
 class RenderViewHostImpl;
 class RenderWidgetHost;
+class RenderWidgetHostImpl;
 class RenderWidgetHostView;
 class RenderWidgetHostViewBase;
 class SiteInstance;
 struct DropData;
 struct TextInputState;
 
 // A browser plugin guest provides functionality for WebContents to operate in
 // the guest role and implements guest-specific overrides for ViewHostMsg_*
 // messages.
 //
@@ skipping 194 matching lines @@
     has_attached_since_surface_set_ = has_attached;
   }
 
   void set_attached_for_test(bool attached) {
     attached_ = attached;
   }
 
  private:
   class EmbedderVisibilityObserver;
 
+  // The RenderWidgetHostImpl corresponding to the owner frame of BrowserPlugin.
+  RenderWidgetHostImpl* GetOwnerRenderWidgetHost() const;
+
   void InitInternal(const BrowserPluginHostMsg_Attach_Params& params,
                     WebContentsImpl* owner_web_contents);
 
   void OnSatisfySequence(int instance_id, const cc::SurfaceSequence& sequence);
   void OnRequireSequence(int instance_id,
                          const cc::SurfaceId& id,
                          const cc::SurfaceSequence& sequence);
   // Message handlers for messages from embedder.
   void OnDetach(int instance_id);
   // Handles drag events from the embedder.
@@ skipping 168 matching lines @@
   // 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_