Remove more strcmp/memcmp usage.

fpdfsdk/pdfwindow/PWL_ScrollBar.h

 // 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
 
 #ifndef FPDFSDK_PDFWINDOW_PWL_SCROLLBAR_H_
 #define FPDFSDK_PDFWINDOW_PWL_SCROLLBAR_H_
 
 #include "fpdfsdk/pdfwindow/PWL_Wnd.h"
 
 class CPWL_SBButton;
 class CPWL_ScrollBar;
 
 struct PWL_SCROLL_INFO {
  public:
   PWL_SCROLL_INFO()
       : fContentMin(0.0f),
         fContentMax(0.0f),
         fPlateWidth(0.0f),
         fBigStep(0.0f),
         fSmallStep(0.0f) {}
+
+  bool operator==(const PWL_SCROLL_INFO& that) const {
+    return fContentMin == that.fContentMin && fContentMax == that.fContentMax &&
+           fPlateWidth == that.fPlateWidth && fBigStep == that.fBigStep &&
+           fSmallStep == that.fSmallStep;
+  }
+  bool operator!=(const PWL_SCROLL_INFO& that) const {
+    return !(*this == that);
+  }
+
   FX_FLOAT fContentMin;
   FX_FLOAT fContentMax;
   FX_FLOAT fPlateWidth;
   FX_FLOAT fBigStep;
   FX_FLOAT fSmallStep;
 };
 
 enum PWL_SCROLLBAR_TYPE { SBT_HSCROLL, SBT_VSCROLL };
 
 enum PWL_SBBUTTON_TYPE { PSBT_MIN, PSBT_MAX, PSBT_POS };
@@ skipping 18 matching lines @@
   PWL_SCROLLBAR_TYPE m_eScrollBarType;
   PWL_SBBUTTON_TYPE m_eSBButtonType;
 
   FX_BOOL m_bMouseDown;
 };
 
 struct PWL_FLOATRANGE {
  public:
   PWL_FLOATRANGE();
   PWL_FLOATRANGE(FX_FLOAT min, FX_FLOAT max);
+
+  bool operator==(const PWL_FLOATRANGE& that) const {
+    return fMin == that.fMin && fMax == that.fMax;
+  }
+  bool operator!=(const PWL_FLOATRANGE& that) const { return !(*this == that); }
+
   void Default();
   void Set(FX_FLOAT min, FX_FLOAT max);
   FX_BOOL In(FX_FLOAT x) const;
   FX_FLOAT GetWidth() const;
 
-  FX_FLOAT fMin, fMax;
+  FX_FLOAT fMin;
+  FX_FLOAT fMax;
 };
 
 struct PWL_SCROLL_PRIVATEDATA {
  public:
   PWL_SCROLL_PRIVATEDATA();
 
+  bool operator==(const PWL_SCROLL_PRIVATEDATA& that) const {
+    return ScrollRange == that.ScrollRange &&
+           fClientWidth == that.fClientWidth && fScrollPos == that.fScrollPos &&
+           fBigStep == that.fBigStep && fSmallStep == that.fSmallStep;
+  }
+  bool operator!=(const PWL_SCROLL_PRIVATEDATA& that) const {
+    return !(*this == that);
+  }
+
   void Default();
   void SetScrollRange(FX_FLOAT min, FX_FLOAT max);
   void SetClientWidth(FX_FLOAT width);
   void SetSmallStep(FX_FLOAT step);
   void SetBigStep(FX_FLOAT step);
   FX_BOOL SetPos(FX_FLOAT pos);
 
   void AddSmall();
   void SubSmall();
   void AddBig();
@@ skipping 65 matching lines @@
   CPWL_SBButton* m_pPosButton;
   PWL_SCROLL_PRIVATEDATA m_sData;
   FX_BOOL m_bMouseDown;
   FX_BOOL m_bMinOrMax;
   FX_BOOL m_bNotifyForever;
   FX_FLOAT m_nOldPos;
   FX_FLOAT m_fOldPosButton;
 };
 
 #endif  // FPDFSDK_PDFWINDOW_PWL_SCROLLBAR_H_