Revert of Refactorise the policy_path_parser framework

chrome/browser/policy/policy_path_parser.h

Index: chrome/browser/policy/policy_path_parser.h
diff --git a/chrome/browser/policy/policy_path_parser.h b/chrome/browser/policy/policy_path_parser.h
index c0d4c222ce858598269eafd34276ccf13b26ac68..5bf03452f7f98b9418f56ce6b183387d3cfb261c 100644
--- a/chrome/browser/policy/policy_path_parser.h
+++ b/chrome/browser/policy/policy_path_parser.h
@@ -7,30 +7,11 @@
 
 #include <string>
 
-#include "base/bind.h"
 #include "base/files/file_path.h"
 
 namespace policy {
 
 namespace path_parser {
-
-namespace internal {
-
-typedef bool (*GetValueFuncPtr)(base::FilePath::StringType*);
-
-struct VariableNameAndValueCallback {
-  const base::FilePath::CharType* name;
-  const GetValueFuncPtr value_func_ptr;
-};
-
-// Different set of variables are supported in each platform (see below). Hence
-// this table is filled in with different elements in each platform.
-extern const VariableNameAndValueCallback kVariableNameAndValueCallbacks[];
-
-// Since the number of elements in the table could vary for each platform, this
-// variable is used to keep track of it.
-extern const int kNoOfVariables;
-}
 
 // This function is used to expand the variables in policy strings that
 // represent paths. The set of supported variables differs between platforms