Make PDFs return find replies in the same form as regular pages.

pdf/pdfium/pdfium_engine.cc

 // 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.
 
 #include "pdf/pdfium/pdfium_engine.h"
 
 #include <math.h>
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 2281 matching lines @@
     if (center.x() < visible_rect.x() || center.x() > visible_rect.right()) {
       int new_x = static_cast<int>(center.x()  * current_zoom_) -
           static_cast<int>(visible_rect.width() * current_zoom_ / 2);
       if (new_x < 0)
         new_x = 0;
       client_->ScrollToX(new_x);
     }
   }
 
   client_->NotifySelectedFindResultChanged(current_find_index_.GetIndex());
+  client_->NotifyNumberOfFindResultsChanged(find_results_.size(), true);
   return true;
 }
 
 void PDFiumEngine::StopFind() {
   SelectionChangeInvalidator selection_invalidator(this);
 
   selection_.clear();
   selecting_ = false;
   find_results_.clear();
   next_page_to_search_ = -1;
@@ skipping 1870 matching lines @@
   FPDF_DOCUMENT doc =
       FPDF_LoadMemDocument(pdf_buffer, pdf_buffer_size, nullptr);
   if (!doc)
     return false;
   bool success = FPDF_GetPageSizeByIndex(doc, page_number, width, height) != 0;
   FPDF_CloseDocument(doc);
   return success;
 }
 
 }  // namespace chrome_pdf