Moving (Can|Grant)AccessFilesOfPageState into RenderFrameHostImpl.

content/browser/child_process_security_policy_impl.cc

Index: content/browser/child_process_security_policy_impl.cc
diff --git a/content/browser/child_process_security_policy_impl.cc b/content/browser/child_process_security_policy_impl.cc
index d8e601cf5af1128ded767809cb83a9df80148c0c..0def4b57ad00d5633e426246ec2b46e29c3159ae 100644
--- a/content/browser/child_process_security_policy_impl.cc
+++ b/content/browser/child_process_security_policy_impl.cc
@@ -4,6 +4,7 @@
 
 #include "content/browser/child_process_security_policy_impl.h"
 
+#include <algorithm>
 #include <utility>
 
 #include "base/command_line.h"
@@ -628,6 +629,15 @@ bool ChildProcessSecurityPolicyImpl::CanReadFile(int child_id,
   return HasPermissionsForFile(child_id, file, READ_FILE_GRANT);
 }
 
+bool ChildProcessSecurityPolicyImpl::CanReadAllFiles(
+    int child_id,
+    const std::vector<base::FilePath>& files) {
+  return std::all_of(files.begin(), files.end(),
+                     [this, child_id](const base::FilePath& file) {
+                       return CanReadFile(child_id, file);
+                     });
+}
+
 bool ChildProcessSecurityPolicyImpl::CanCreateReadWriteFile(
     int child_id,
     const base::FilePath& file) {