Merge to XFA: Do not call into formfiller code with a NULL PageView.

fpdfsdk/src/formfiller/FFL_IFormFiller.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 "../../include/formfiller/FFL_FormFiller.h"
 #include "../../include/formfiller/FFL_IFormFiller.h"
 #include "../../include/formfiller/FFL_CheckBox.h"
 #include "../../include/formfiller/FFL_ComboBox.h"
@@ skipping 445 matching lines @@
       if (pWidget->IsAppModified()) {
         if (CFFL_FormFiller* pFormFiller = GetFormFiller(pWidget, FALSE)) {
           pFormFiller->ResetPDFWindow(pPageView,
                                       nValueAge == pWidget->GetValueAge());
         }
       }
     }
   }
 
   if (CFFL_FormFiller* pFormFiller = GetFormFiller(pAnnot, TRUE))
-    return pFormFiller->SetFocusForAnnot(pAnnot, nFlag);
+    pFormFiller->SetFocusForAnnot(pAnnot, nFlag);
 
   return TRUE;
 }
 
 FX_BOOL CFFL_IFormFiller::OnKillFocus(CPDFSDK_Annot* pAnnot, FX_UINT nFlag) {
   if (!pAnnot)
     return FALSE;
   ASSERT(pAnnot->GetPDFAnnot()->GetSubType() == "Widget");
 
   if (CFFL_FormFiller* pFormFiller = GetFormFiller(pAnnot, FALSE)) {
-    if (!pFormFiller->KillFocusForAnnot(pAnnot, nFlag))
-      return FALSE;
+    pFormFiller->KillFocusForAnnot(pAnnot, nFlag);
 
     if (!m_bNotifying) {
       CPDFSDK_Widget* pWidget = (CPDFSDK_Widget*)pAnnot;
       if (pWidget->GetAAction(CPDF_AAction::LoseFocus)) {
         m_bNotifying = TRUE;
         pWidget->ClearAppModified();
 
         CPDFSDK_PageView* pPageView = pWidget->GetPageView();
         ASSERT(pPageView != NULL);
 
@@ skipping 596 matching lines @@
                                         FX_BOOL& bExit,
                                         FX_DWORD nFlag) {
   CFFL_PrivateData* pData = (CFFL_PrivateData*)pPrivateData;
   ASSERT(pData->pWidget);
 
   CFFL_FormFiller* pFormFiller = GetFormFiller(pData->pWidget, FALSE);
 
   if (!bEditOrList)
     pFormFiller->OnKeyStroke(bExit, nFlag);
 }