json_schema_compiler: Use std::vector<char> for binary values.

chrome/browser/chromeos/extensions/wallpaper_private_api.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 CHROME_BROWSER_CHROMEOS_EXTENSIONS_WALLPAPER_PRIVATE_API_H_
 #define CHROME_BROWSER_CHROMEOS_EXTENSIONS_WALLPAPER_PRIVATE_API_H_
 
+#include <string>
+#include <vector>
+
 #include "base/threading/sequenced_worker_pool.h"
 #include "chrome/browser/chromeos/extensions/wallpaper_function_base.h"
 #include "chrome/common/extensions/api/wallpaper_private.h"
 #include "net/url_request/url_fetcher_delegate.h"
 
 namespace chromeos {
 class UserImage;
 }  // namespace chromeos
 
 // Wallpaper manager strings.
@@ skipping 240 matching lines @@
   virtual bool RunAsync() override;
 
  private:
   // Failed to save thumbnail for |file_name|.
   void Failure(const std::string& file_name);
 
   // Saved thumbnail to thumbnail directory.
   void Success();
 
   // Saves thumbnail to thumbnail directory as |file_name|.
-  void Save(const std::string& data, const std::string& file_name);
+  void Save(const std::vector<char>& data, const std::string& file_name);
 
   // Sequence token associated with wallpaper operations. Shared with
   // WallpaperManager.
   base::SequencedWorkerPool::SequenceToken sequence_token_;
 };
 
 class WallpaperPrivateGetOfflineWallpaperListFunction
     : public AsyncExtensionFunction {
  public:
   DECLARE_EXTENSION_FUNCTION("wallpaperPrivate.getOfflineWallpaperList",
@@ skipping 13 matching lines @@
   // Sends the list of files to extension api caller. If no files or no
   // directory, sends empty list.
   void OnComplete(const std::vector<std::string>& file_list);
 
   // Sequence token associated with wallpaper operations. Shared with
   // WallpaperManager.
   base::SequencedWorkerPool::SequenceToken sequence_token_;
 };
 
 #endif  // CHROME_BROWSER_CHROMEOS_EXTENSIONS_WALLPAPER_PRIVATE_API_H_