Remove unused CFX_FloatRect::Substract4().

Change-Id: I08706f53bf3960cbea60b09a1702bf0ba371f1ce
Reviewed-on: https://pdfium-review.googlesource.com/20211
Reviewed-by: Henrique Nakashima <hnakashima@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>

2 files changed, 0 insertions, 45 deletions

diff --git a/core/fxcrt/fx_coordinates.cpp b/core/fxcrt/fx_coordinates.cpp
index b3d0432e1c..c345a822b9 100644
--- a/core/fxcrt/fx_coordinates.cpp
+++ b/core/fxcrt/fx_coordinates.cpp
@@ -83,49 +83,6 @@ void CFX_FloatRect::Union(const CFX_FloatRect& other_rect) {
   top = std::max(top, other.top);
 }
 
-int CFX_FloatRect::Substract4(CFX_FloatRect& s, CFX_FloatRect* pRects) {
-  Normalize();
-  s.Normalize();
-  int nRects = 0;
-  CFX_FloatRect rects[4];
-  if (left < s.left) {
-    rects[nRects].left = left;
-    rects[nRects].bottom = bottom;
-    rects[nRects].right = s.left;
-    rects[nRects].top = top;
-    nRects++;
-  }
-  if (s.left < right && s.top < top) {
-    rects[nRects].left = s.left;
-    rects[nRects].bottom = s.top;
-    rects[nRects].right = right;
-    rects[nRects].top = top;
-    nRects++;
-  }
-  if (s.top > bottom && s.right < right) {
-    rects[nRects].left = s.right;
-    rects[nRects].bottom = bottom;
-    rects[nRects].right = right;
-    rects[nRects].top = s.top;
-    nRects++;
-  }
-  if (s.bottom > bottom) {
-    rects[nRects].left = s.left;
-    rects[nRects].bottom = bottom;
-    rects[nRects].right = s.right;
-    rects[nRects].top = s.bottom;
-    nRects++;
-  }
-  if (nRects == 0)
-    return 0;
-
-  for (int i = 0; i < nRects; i++) {
-    pRects[i] = rects[i];
-    pRects[i].Intersect(*this);
-  }
-  return nRects;
-}
-
 FX_RECT CFX_FloatRect::GetOuterRect() const {
   CFX_FloatRect rect1 = *this;
   FX_RECT rect;
diff --git a/core/fxcrt/fx_coordinates.h b/core/fxcrt/fx_coordinates.h
index 5840a14815..49173a38e8 100644
--- a/core/fxcrt/fx_coordinates.h
+++ b/core/fxcrt/fx_coordinates.h
@@ -255,8 +255,6 @@ class CFX_FloatRect {
   FX_RECT GetClosestRect() const;
   CFX_FloatRect GetCenterSquare() const;
 
-  int Substract4(CFX_FloatRect& substract_rect, CFX_FloatRect* pRects);
-
   void InitRect(const CFX_PointF& point) {
     left = point.x;
     right = point.x;