Replace CXFA_StrokeArray and CXFA_WidgetArray with std::vector

xfa/fxfa/parser/cxfa_stroke.h

 // Copyright 2016 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
 
 #ifndef XFA_FXFA_PARSER_CXFA_STROKE_H_
 #define XFA_FXFA_PARSER_CXFA_STROKE_H_
 
 #include "core/fxcrt/fx_system.h"
 #include "core/fxge/fx_dib.h"
 #include "xfa/fxfa/fxfa_basic.h"
 #include "xfa/fxfa/parser/cxfa_data.h"
 
 enum StrokeSameStyle {
   XFA_STROKE_SAMESTYLE_NoPresence = 1,
   XFA_STROKE_SAMESTYLE_Corner = 2
 };
 
 class CXFA_Node;
 
 class CXFA_Stroke : public CXFA_Data {
  public:
+  CXFA_Stroke() : CXFA_Stroke(nullptr) {}
   explicit CXFA_Stroke(CXFA_Node* pNode) : CXFA_Data(pNode) {}
 
   bool IsCorner() const { return GetElementType() == XFA_Element::Corner; }
   bool IsEdge() const { return GetElementType() == XFA_Element::Edge; }
   bool IsVisible() const { return GetPresence() == XFA_ATTRIBUTEENUM_Visible; }
   int32_t GetPresence() const;
   int32_t GetCapType() const;
   int32_t GetStrokeType() const;
   FX_FLOAT GetThickness() const;
   CXFA_Measurement GetMSThickness() const;
   void SetMSThickness(CXFA_Measurement msThinkness);
   FX_ARGB GetColor() const;
   void SetColor(FX_ARGB argb);
   int32_t GetJoinType() const;
   bool IsInverted() const;
   FX_FLOAT GetRadius() const;
   bool SameStyles(CXFA_Stroke stroke, uint32_t dwFlags = 0) const;
 };
 
-typedef CFX_ArrayTemplate<CXFA_Stroke> CXFA_StrokeArray;
-
 #endif  // XFA_FXFA_PARSER_CXFA_STROKE_H_