Mark methods with override in pdf/

pdf/pdf.h

 // Copyright (c) 2010 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 PDF_PDF_H_
 #define PDF_PDF_H_
 
 #include "ppapi/c/ppb.h"
 #include "ppapi/cpp/module.h"
 
 namespace chrome_pdf {
 
 class PDFModule : public pp::Module {
  public:
   PDFModule();
-  virtual ~PDFModule();
+  ~PDFModule() override;
 
   // pp::Module implementation.
-  virtual bool Init();
-  virtual pp::Instance* CreateInstance(PP_Instance instance);
+  bool Init() override;
+  pp::Instance* CreateInstance(PP_Instance instance) override;
 };
 
 int PPP_InitializeModule(PP_Module module_id,
                          PPB_GetInterface get_browser_interface);
 void PPP_ShutdownModule();
 const void* PPP_GetInterface(const char* interface_name);
 
 #if defined(OS_WIN)
 // |pdf_buffer| is the buffer that contains the entire PDF document to be
 //     rendered.
@@ skipping 73 matching lines @@
                            int page_number,
                            void* bitmap_buffer,
                            int bitmap_width,
                            int bitmap_height,
                            int dpi,
                            bool autorotate);
 
 }  // namespace chrome_pdf
 
 #endif  // PDF_PDF_H_