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

chrome/browser/extensions/api/braille_display_private/braille_controller_brlapi.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 CHROME_BROWSER_EXTENSIONS_API_BRAILLE_DISPLAY_PRIVATE_BRAILLE_CONTROLLER_BRLAPI_H_
 #define CHROME_BROWSER_EXTENSIONS_API_BRAILLE_DISPLAY_PRIVATE_BRAILLE_CONTROLLER_BRLAPI_H_
 
 #include "base/files/file_path.h"
 #include "base/files/file_path_watcher.h"
 #include "base/gtest_prod_util.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/singleton.h"
 #include "base/observer_list.h"
 #include "chrome/browser/extensions/api/braille_display_private/braille_controller.h"
 #include "chrome/browser/extensions/api/braille_display_private/brlapi_connection.h"
 #include "library_loaders/libbrlapi.h"
 
 namespace extensions {
 namespace api {
 namespace braille_display_private {
 
 // BrailleController implementation based on libbrlapi from brltty.
 class BrailleControllerImpl : public BrailleController {
  public:
   static BrailleControllerImpl* GetInstance();
   scoped_ptr<DisplayState> GetDisplayState() override;
-  void WriteDots(const std::string& cells) override;
+  void WriteDots(const std::vector<char>& cells) override;
   void AddObserver(BrailleObserver* observer) override;
   void RemoveObserver(BrailleObserver* observer) override;
 
  private:
   // For the unit tests.
   friend class BrailleDisplayPrivateApiTest;
   friend class MockBrlapiConnection;
 
   BrailleControllerImpl();
   ~BrailleControllerImpl() override;
@@ skipping 44 matching lines @@
   friend struct DefaultSingletonTraits<BrailleControllerImpl>;
 
   DISALLOW_COPY_AND_ASSIGN(BrailleControllerImpl);
 };
 
 }  // namespace braille_display_private
 }  // namespace api
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_BRAILLE_DISPLAY_PRIVATE_BRAILLE_CONTROLLER_BRLAPI_H_