add conics to path ops

tests/PathOpsTestCommon.cpp

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #include "PathOpsTestCommon.h"
 #include "SkPathOpsBounds.h"
+#include "SkPathOpsConic.h"
 #include "SkPathOpsCubic.h"
 #include "SkPathOpsLine.h"
 #include "SkPathOpsQuad.h"
 #include "SkReduceOrder.h"
 #include "SkTSort.h"
 
 static double calc_t_div(const SkDCubic& cubic, double precision, double start) {
     const double adjust = sqrt(3.) / 36;
     SkDCubic sub;
     const SkDCubic* cPtr;
@@ skipping 226 matching lines @@
     }
     if (SkScalarIsNaN(bounds.fTop)) {
         return false;
     }
     if (SkScalarIsNaN(bounds.fRight)) {
         return false;
     }
     return !SkScalarIsNaN(bounds.fBottom);
 }
 
+bool ValidConic(const SkDConic& conic) {
+    for (int index = 0; index < SkDConic::kPointCount; ++index) {
+        if (!ValidPoint(conic[index])) {
+            return false;
+        }
+    }
+    if (SkDoubleIsNaN(conic.fWeight)) {
+        return false;
+    }
+    return true;
+}
+
 bool ValidCubic(const SkDCubic& cubic) {
     for (int index = 0; index < 4; ++index) {
         if (!ValidPoint(cubic[index])) {
             return false;
         }
     }
     return true;
 }
 
 bool ValidLine(const SkDLine& line) {
@@ skipping 32 matching lines @@
     }
     return true;
 }
 
 bool ValidVector(const SkDVector& v) {
     if (SkDoubleIsNaN(v.fX)) {
         return false;
     }
     return !SkDoubleIsNaN(v.fY);
 }