Grant access to files in PageState, which have already been validated.

content/browser/renderer_host/render_view_host_impl.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.
 
 #ifndef CONTENT_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_IMPL_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_IMPL_H_
 
 #include <map>
 #include <string>
 #include <vector>
@@ skipping 370 matching lines @@
   friend class RenderFrameHostImpl;
   friend class TestRenderViewHost;
   FRIEND_TEST_ALL_PREFIXES(RenderViewHostTest, BasicRenderFrameHost);
   FRIEND_TEST_ALL_PREFIXES(RenderViewHostTest, RoutingIdSane);
 
   // TODO(creis): Move to a private namespace on RenderFrameHostImpl.
   // Delay to wait on closing the WebContents for a beforeunload/unload handler
   // to fire.
   static const int64 kUnloadTimeoutMS;
 
+  // Returns whether the current RenderProcessHost has read access to the files
+  // reported in |state|.
   bool CanAccessFilesOfPageState(const PageState& state) const;
 
+  // Grants the current RenderProcessHost read access to any file listed in
+  // |validated_state|.  It is important that the PageState has been validated
+  // upon receipt from the renderer process to prevent it from forging access to
+  // files without the user's consent.
+  void GrantFileAccessFromPageState(const PageState& validated_state);
+
   // The number of RenderFrameHosts which have a reference to this RVH.
   int frames_ref_count_;
 
   // Our delegate, which wants to know about changes in the RenderView.
   RenderViewHostDelegate* delegate_;
 
   // The SiteInstance associated with this RenderViewHost.  All pages drawn
   // in this RenderViewHost are part of this SiteInstance.  Cannot change
   // over time.
   scoped_refptr<SiteInstanceImpl> instance_;
@@ skipping 65 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(RenderViewHostImpl);
 };
 
 #if defined(COMPILER_MSVC)
 #pragma warning(pop)
 #endif
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_IMPL_H_