Use size_t in crypto::SignatureVerifier.

extensions/browser/verified_contents.h

 // Copyright 2014 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_VERIFIED_CONTENTS_H_
 #define EXTENSIONS_BROWSER_VERIFIED_CONTENTS_H_
 
 #include <stdint.h>
 
 #include <map>
 #include <string>
 #include <vector>
 
 #include "base/files/file_path.h"
 #include "base/macros.h"
 #include "base/version.h"
 
 namespace extensions {
 
 // This class encapsulates the data in a "verified_contents.json" file
 // generated by the webstore for a .crx file. That data includes a set of
 // signed expected hashes of file content which can be used to check for
 // corruption of extension files on local disk.
 class VerifiedContents {
  public:
   // Note: the public_key must remain valid for the lifetime of this object.
-  VerifiedContents(const uint8_t* public_key, int public_key_size);
+  VerifiedContents(const uint8_t* public_key, size_t public_key_size);
   ~VerifiedContents();
 
   // Returns true if we successfully parsed the verified_contents.json file at
   // |path| and validated the enclosed signature. The
   bool InitFrom(const base::FilePath& path);
 
   int block_size() const { return block_size_; }
   const std::string& extension_id() const { return extension_id_; }
   const base::Version& version() const { return version_; }
 
@@ skipping 14 matching lines @@
   // The |protected_value| and |payload| arguments should be base64url encoded
   // strings, and |signature_bytes| should be a byte array. See comments in the
   // .cc file on GetPayload for where these come from in the overall input
   // file.
   bool VerifySignature(const std::string& protected_value,
                        const std::string& payload,
                        const std::string& signature_bytes);
 
   // The public key we should use for signature verification.
   const uint8_t* public_key_;
-  const int public_key_size_;
+  const size_t public_key_size_;
 
   // Indicates whether the signature was successfully validated or not.
   bool valid_signature_;
 
   // The block size used for computing the treehash root hashes.
   int block_size_;
 
   // Information about which extension these signed hashes are for.
   std::string extension_id_;
   base::Version version_;
 
   // The expected treehash root hashes for each file, lower cased so we can do
   // case-insensitive lookups.
   //
   // We use a multi-map here so that we can do fast lookups of paths from
   // requests on case-insensitive systems (windows, mac) where the request path
   // might not have the exact right capitalization, but not break
   // case-sensitive systems (linux, chromeos). TODO(asargent) - we should give
   // developers client-side warnings in each of those cases, and have the
   // webstore reject the cases they can statically detect. See crbug.com/29941
   typedef std::multimap<base::FilePath::StringType, std::string> RootHashes;
   RootHashes root_hashes_;
 
   DISALLOW_COPY_AND_ASSIGN(VerifiedContents);
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_BROWSER_VERIFIED_CONTENTS_H_