Extensions: Move id_util functions to crx_file component.

extensions/browser/external_provider_interface.h

 // Copyright 2013 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_BROWSER_EXTERNAL_PROVIDER_INTERFACE_H_
 #define EXTENSIONS_BROWSER_EXTERNAL_PROVIDER_INTERFACE_H_
 
 #include <vector>
 
 #include "base/memory/linked_ptr.h"
 #include "extensions/common/manifest.h"
 
 class GURL;
 
 namespace base {
 class FilePath;
 class Version;
 }
 
 namespace extensions {
 
 // This class is an abstract class for implementing external extensions
 // providers.
 class ExternalProviderInterface {
  public:
   // ExternalProvider uses this interface to communicate back to the
   // caller what extensions are registered, and which |id|, |version| and |path|
   // they have. See also VisitRegisteredExtension below. Ownership of |version|
   // is not transferred to the visitor.  Callers of the methods below must
-  // ensure that |id| is a valid extension id (use Extension::IdIsValid(id)).
+  // ensure that |id| is a valid extension id (use
+  // crx_file::id_util::IdIsValid(id)).
   class VisitorInterface {
    public:
     // Return true if the extension install will proceed.  Install will not
     // proceed if the extension is already installed from a higher priority
     // location.
     virtual bool OnExternalExtensionFileFound(
         const std::string& id,
         const base::Version* version,
         const base::FilePath& path,
         Manifest::Location location,
@@ skipping 49 matching lines @@
   // from its source.
   virtual bool IsReady() const = 0;
 };
 
 typedef std::vector<linked_ptr<ExternalProviderInterface> >
     ProviderCollection;
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_BROWSER_EXTERNAL_PROVIDER_INTERFACE_H_