CFX_FloatPoint default constructor and equals operators

core/fxcrt/include/fx_coordinates.h

Index: core/fxcrt/include/fx_coordinates.h
diff --git a/core/fxcrt/include/fx_coordinates.h b/core/fxcrt/include/fx_coordinates.h
index 7da6057ed4d7f75b1471e44d399805dab3ef4a14..bfdc46cbf29770924de6ac4bb94e77190885fa86 100644
--- a/core/fxcrt/include/fx_coordinates.h
+++ b/core/fxcrt/include/fx_coordinates.h
@@ -179,8 +179,14 @@ struct FX_RECT {
 // LBRT rectangles (y-axis runs upwards).
 class CFX_FloatPoint {
  public:
+  CFX_FloatPoint() : x(0.0f), y(0.0f) {}
   CFX_FloatPoint(FX_FLOAT xx, FX_FLOAT yy) : x(xx), y(yy) {}
 
+  bool operator==(const CFX_FloatPoint& that) const {
+    return x == that.x && y == that.y;
+  }
+  bool operator!=(const CFX_FloatPoint& that) const { return !(*this == that); }
+
   FX_FLOAT x;
   FX_FLOAT y;
 };