Create withheld permissions

extensions/common/url_pattern.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 EXTENSIONS_COMMON_URL_PATTERN_H_
 #define EXTENSIONS_COMMON_URL_PATTERN_H_
 
 #include <functional>
 #include <string>
 #include <vector>
 
@@ skipping 135 matching lines @@
   // of the outer "filesystem:" part.
   bool MatchesScheme(const std::string& test) const;
 
   // Returns true if |test| matches our host.
   bool MatchesHost(const std::string& test) const;
   bool MatchesHost(const GURL& test) const;
 
   // Returns true if |test| matches our path.
   bool MatchesPath(const std::string& test) const;
 
+  // Returns true if the pattern is vague enough that it implies all hosts,
+  // such as *://*/*.
+  // This is an expensive method, and should be used sparingly!

[not at google - send to devlin, 2014/06/27 23:24:34]

it's cached somewhere right? could you call that place out?

[Devlin, 2014/06/30 17:06:11]

Done.

+  bool ImpliesAllHosts() const;
+
   // Sets the port. Returns false if the port is invalid.
   bool SetPort(const std::string& port);
   const std::string& port() const { return port_; }
 
   // Returns a string representing this instance.
   const std::string& GetAsString() const;
 
   // Determines whether there is a URL that would match this instance and
   // another instance. This method is symmetrical: Calling
   // other.OverlapsWith(this) would result in the same answer.
@@ skipping 71 matching lines @@
   // MatchPattern() function.
   std::string path_escaped_;
 
   // A string representing this URLPattern.
   mutable std::string spec_;
 };
 
 typedef std::vector<URLPattern> URLPatternList;
 
 #endif  // EXTENSIONS_COMMON_URL_PATTERN_H_