Turn on enforce-in-pdf Clang plugin flag.

pdf/pdfium/pdfium_range.cc

 // 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.
 
 #include "pdf/pdfium/pdfium_range.h"
 
 #include "base/logging.h"
 #include "base/strings/string_util.h"
 #include "pdf/pdfium/pdfium_api_string_buffer_adapter.h"
 
 namespace chrome_pdf {
 
 PDFiumRange::PDFiumRange(PDFiumPage* page, int char_index, int char_count)
     : page_(page),
       char_index_(char_index),
       char_count_(char_count),
       cached_screen_rects_zoom_(0) {
 }
 
-PDFiumRange::~PDFiumRange() {
-}
+PDFiumRange::PDFiumRange(const PDFiumRange& that) = default;
+
+PDFiumRange::~PDFiumRange() = default;
 
 void PDFiumRange::SetCharCount(int char_count) {
   char_count_ = char_count;
 
   cached_screen_rects_offset_ = pp::Point();
   cached_screen_rects_zoom_ = 0;
 }
 
 std::vector<pp::Rect> PDFiumRange::GetScreenRects(const pp::Point& offset,
                                                   double zoom,
@@ skipping 41 matching lines @@
     unsigned short* data =
         reinterpret_cast<unsigned short*>(api_string_adapter.GetData());
     int written = FPDFText_GetText(page_->GetTextPage(), index, count, data);
     api_string_adapter.Close(written);
   }
 
   return rv;
 }
 
 }  // namespace chrome_pdf