Moving (Can|Grant)AccessFilesOfPageState into RenderFrameHostImpl.

content/browser/child_process_security_policy_impl.h

Index: content/browser/child_process_security_policy_impl.h
diff --git a/content/browser/child_process_security_policy_impl.h b/content/browser/child_process_security_policy_impl.h
index 2f2b8100b8c68b4b07d6ad4870939250ddaf063d..271e69c0acd110ed0e3d74f7b1d0c8512300973f 100644
--- a/content/browser/child_process_security_policy_impl.h
+++ b/content/browser/child_process_security_policy_impl.h
@@ -8,6 +8,7 @@
 #include <map>
 #include <set>
 #include <string>
+#include <vector>
 
 #include "base/compiler_specific.h"
 #include "base/gtest_prod_util.h"
@@ -77,6 +78,9 @@ class CONTENT_EXPORT ChildProcessSecurityPolicyImpl
   void GrantSendMidiSysExMessage(int child_id) override;
   bool CanAccessDataForOrigin(int child_id, const GURL& url) override;
 
+  // Returns if |child_id| can read all of the |files|.
+  bool CanReadAllFiles(int child_id, const std::vector<base::FilePath>& files);
+
   // Pseudo schemes are treated differently than other schemes because they
   // cannot be requested like normal URLs.  There is no mechanism for revoking
   // pseudo schemes.