Move GetAsarArchivePath to asar_util.h

atom/common/asar/asar_util.h

@@ -18,6 +18,11 @@ class Archive;
 // Gets or creates a new Archive from the path.
 std::shared_ptr<Archive> GetOrCreateAsarArchive(const base::FilePath& path);
 
+// Separates the path to Archive out.
+bool GetAsarArchivePath(const base::FilePath& full_path,
+                        base::FilePath* asar_path,
+                        base::FilePath* relative_path);
+
 }  // namespace asar
 
 #endif  // ATOM_COMMON_ASAR_ASAR_UTIL_H_