Revert of Improve linearized pdf load/show time.

pdf/out_of_process_instance.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 PDF_OUT_OF_PROCESS_INSTANCE_H_
 #define PDF_OUT_OF_PROCESS_INSTANCE_H_
 
 #include <stdint.h>
 #include <string.h>
 
@@ skipping 117 matching lines @@
   void DocumentPaintOccurred() override;
   void DocumentLoadComplete(int page_count) override;
   void DocumentLoadFailed() override;
   void FontSubstituted() override;
   pp::Instance* GetPluginInstance() override;
   void DocumentHasUnsupportedFeature(const std::string& feature) override;
   void DocumentLoadProgress(uint32_t available, uint32_t doc_size) override;
   void FormTextFieldFocusChange(bool in_focus) override;
   bool IsPrintPreview() override;
   uint32_t GetBackgroundColor() override;
-  void CancelBrowserDownload() override;
   void IsSelectingChanged(bool is_selecting) override;
 
   // PreviewModeClient::Client implementation.
   void PreviewDocumentLoadComplete() override;
   void PreviewDocumentLoadFailed() override;
 
   // Helper functions for implementing PPP_PDF.
   void RotateClockwise();
   void RotateCounterclockwise();
 
@@ skipping 221 matching lines @@
     ACCESSIBILITY_STATE_PENDING,  // Enabled but waiting for doc to load.
     ACCESSIBILITY_STATE_LOADED
   } accessibility_state_;
 
   DISALLOW_COPY_AND_ASSIGN(OutOfProcessInstance);
 };
 
 }  // namespace chrome_pdf
 
 #endif  // PDF_OUT_OF_PROCESS_INSTANCE_H_