Don't add duplicate points when clipping

cc/base/math_util.h

Index: cc/base/math_util.h
diff --git a/cc/base/math_util.h b/cc/base/math_util.h
index 05014ee5c19dffd7abb676c8ba0a3f5e7e90753e..b008b1a3c8599db0a803c06ec8f0aeaf46866505 100644
--- a/cc/base/math_util.h
+++ b/cc/base/math_util.h
@@ -335,6 +335,9 @@ class ScopedSubnormalFloatDisabler {
   DISALLOW_COPY_AND_ASSIGN(ScopedSubnormalFloatDisabler);
 };
 
+bool IsNearlyTheSameForTesting(const float left, const float right);

[Peter Mayo, 2017/01/12 00:05:13]

These need to lose const to match.

Another patchset coming when the compile/test/upload cycle is complete.

[danakj, 2017/01/12 00:10:19]

Yep yep

+bool IsNearlyTheSameForTesting(const gfx::PointF& l, const gfx::PointF& r);
+bool IsNearlyTheSameForTesting(const gfx::Point3F& l, const gfx::Point3F& r);
 }  // namespace cc
 
 #endif  // CC_BASE_MATH_UTIL_H_