Handle long press in PDF documents.

pdf/pdf_engine.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_PDF_ENGINE_H_
 #define PDF_PDF_ENGINE_H_
 
 #include <stdint.h>
 
 #include "build/build_config.h"
@@ skipping 124 matching lines @@
 
     // Pops up a file selection dialog and returns the result.
     virtual std::string ShowFileSelectionDialog() = 0;
 
     // Creates and returns new URL loader for partial document requests.
     virtual pp::URLLoader CreateURLLoader() = 0;
 
     // Calls the client's OnCallback() function in delay_in_ms with the given
     // id.
     virtual void ScheduleCallback(int id, int delay_in_ms) = 0;
+    // Calls the client's OnTouchTimerCallback() function in delay_in_ms with

[Lei Zhang, 2017/05/04 19:29:26]

Refer to |variable_name| per style guide. Fix the incorrect one above.

[dsinclair, 2017/05/04 20:26:18]

Done.

+    // the given id.
+    virtual void ScheduleTouchTimerCallback(int id, int delay_in_ms) = 0;
 
     // Searches the given string for "term" and returns the results.  Unicode-
     // aware.
     struct SearchStringResult {
       int start_index;
       int length;
     };
     virtual void SearchString(const base::char16* string,
                               const base::char16* term,
                               bool case_sensitive,
@@ skipping 88 matching lines @@
   // Returns a page's rect in screen coordinates, as well as its surrounding
   // border areas and bottom separator.
   virtual pp::Rect GetPageScreenRect(int page_index) const = 0;
   // Gets the offset of the vertical scrollbar from the top in document
   // coordinates.
   virtual int GetVerticalScrollbarYPosition() = 0;
   // Set color / grayscale rendering modes.
   virtual void SetGrayscale(bool grayscale) = 0;
   // Callback for timer that's set with ScheduleCallback().
   virtual void OnCallback(int id) = 0;
+  // Callback for timer that's set with ScheduleTouchTimerCallback().
+  virtual void OnTouchTimerCallback(int id) = 0;
   // Get the number of characters on a given page.
   virtual int GetCharCount(int page_index) = 0;
   // Get the bounds in page pixels of a character on a given page.
   virtual pp::FloatRect GetCharBounds(int page_index, int char_index) = 0;
   // Get a given unicode character on a given page.
   virtual uint32_t GetCharUnicode(int page_index, int char_index) = 0;
   // Given a start char index, find the longest continuous run of text that's
   // in a single direction and with the same style and font size. Return the
   // length of that sequence and its font size and bounding box.
   virtual void GetTextRunInfo(int page_index,
@@ skipping 98 matching lines @@
   virtual bool GetPDFPageSizeByIndex(const void* pdf_buffer,
                                      int pdf_buffer_size,
                                      int page_number,
                                      double* width,
                                      double* height) = 0;
 };
 
 }  // namespace chrome_pdf
 
 #endif  // PDF_PDF_ENGINE_H_