Use RenderFrameHost for ::RequestPermission() and ::CancelPermission().

content/browser/permissions/permission_service_context.h

 // Copyright 2014 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.
 
 #ifndef CONTENT_BROWSER_PERMISSIONS_PERMISSION_SERVICE_CONTEXT_H_
 #define CONTENT_BROWSER_PERMISSIONS_PERMISSION_SERVICE_CONTEXT_H_
 
 #include "base/macros.h"
 #include "base/memory/scoped_vector.h"
 #include "content/public/browser/web_contents_observer.h"
@@ skipping 18 matching lines @@
 
   void CreateService(mojo::InterfaceRequest<PermissionService> request);
 
   // Called by a PermissionService identified as |service| when it has a
   // connection error in order to get unregistered and killed.
   void ServiceHadConnectionError(PermissionServiceImpl* service);
 
   BrowserContext* GetBrowserContext() const;
   GURL GetEmbeddingOrigin() const;
 
+  RenderFrameHost* render_frame_host() const;
+
  private:
   // WebContentsObserver
   void RenderFrameDeleted(RenderFrameHost* render_frame_host) override;
   void DidNavigateAnyFrame(RenderFrameHost* render_frame_host,
                            const LoadCommittedDetails& details,
                            const FrameNavigateParams& params) override;
 
   void CancelPendingOperations(RenderFrameHost*) const;
 
   RenderFrameHost* render_frame_host_;
   RenderProcessHost* render_process_host_;
   ScopedVector<PermissionServiceImpl> services_;
 
   DISALLOW_COPY_AND_ASSIGN(PermissionServiceContext);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_PERMISSIONS_PERMISSION_SERVICE_CONTEXT_H_