PDF: Fix a failing find-in-page corner case.

pdf/pdfium/pdfium_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_PDFIUM_PDFIUM_ENGINE_H_
 #define PDF_PDFIUM_PDFIUM_ENGINE_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 256 matching lines @@
 
   void GetAllScreenRectsUnion(std::vector<PDFiumRange>* rect_range,
                               const pp::Point& offset_point,
                               std::vector<pp::Rect>* rect_vector);
 
   void UpdateTickMarks();
 
   // Called to continue searching so we don't block the main thread.
   void ContinueFind(int32_t result);
 
-  // Inserts a find result into find_results_, which is sorted.
+  // Inserts a find result into |find_results_|, which is sorted.
   void AddFindResult(const PDFiumRange& result);
 
   // Search a page using PDFium's methods.  Doesn't work with unicode.  This
   // function is just kept arount in case PDFium code is fixed.
   void SearchUsingPDFium(const base::string16& term,
                          bool case_sensitive,
                          bool first_search,
                          int character_to_start_searching_from,
                          int current_page);
 
@@ skipping 349 matching lines @@
 
   // Used for selection.  There could be more than one range if selection spans
   // more than one page.
   std::vector<PDFiumRange> selection_;
   // True if we're in the middle of selection.
   bool selecting_;
 
   MouseDownState mouse_down_state_;
 
   // Used for searching.
-  typedef std::vector<PDFiumRange> FindResults;
-  FindResults find_results_;
+  std::vector<PDFiumRange> find_results_;
   // Which page to search next.
   int next_page_to_search_;
   // Where to stop searching.
   int last_page_to_search_;
   int last_character_index_to_search_;  // -1 if search until end of page.
   // Which result the user has currently selected.
   FindTextIndex current_find_index_;
   // Where to resume searching.
   FindTextIndex resume_find_index_;
 
@@ skipping 131 matching lines @@
   bool GetPDFPageSizeByIndex(const void* pdf_buffer,
                              int pdf_buffer_size,
                              int page_number,
                              double* width,
                              double* height) override;
 };
 
 }  // namespace chrome_pdf
 
 #endif  // PDF_PDFIUM_PDFIUM_ENGINE_H_