Change bool type to fix warnings.

fpdfsdk/pdfwindow/PWL_EditCtrl.cpp

 // Copyright 2014 PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
 #include "fpdfsdk/pdfwindow/PWL_EditCtrl.h"
 
 #include "core/fpdfdoc/include/cpvt_section.h"
 #include "core/fpdfdoc/include/cpvt_word.h"
@@ skipping 266 matching lines @@
   switch (word) {
     case FWL_VKEY_Back:
       Backspace();
       break;
     case FWL_VKEY_Return:
       InsertReturn();
       break;
     case FWL_VKEY_Unknown:
       break;
     default:
-      if (IsINSERTpressed(nFlag))
-        Delete();
       InsertWord(word, GetCharSet());
       break;
   }
 
   return TRUE;
 }
 
 FX_BOOL CPWL_EditCtrl::OnLButtonDown(const CFX_FloatPoint& point,
                                      uint32_t nFlag) {
   CPWL_Wnd::OnLButtonDown(point, nFlag);
@@ skipping 323 matching lines @@
   CPVT_WordPlace wpEnd = m_pEdit->WordIndexToWordPlace(nEndChar);
   return m_pEdit->GetRangeText(CPVT_WordRange(wpStart, wpEnd));
 }
 
 void CPWL_EditCtrl::SetReadyToInput() {
   if (m_bMouseDown) {
     ReleaseCapture();
     m_bMouseDown = FALSE;
   }
 }