Update matrix distance metric to account for snapping.

ui/gfx/transform_util_unittest.cc

Index: ui/gfx/transform_util_unittest.cc
diff --git a/ui/gfx/transform_util_unittest.cc b/ui/gfx/transform_util_unittest.cc
index 893a062c9e1ed2da840fd3a8485eb574248c8769..404833c93144360a11829d09d7f4728a4abe09c1 100644
--- a/ui/gfx/transform_util_unittest.cc
+++ b/ui/gfx/transform_util_unittest.cc
@@ -192,19 +192,5 @@ TEST(TransformUtilTest, TransformAboutPivot) {
   EXPECT_EQ(Point(-11, -20).ToString(), point.ToString());
 }
 
-TEST(TransformUtilTest, MatrixDistance) {
-  Transform a;
-  Transform b(0, 1, 1, 1,
-              1, 0, 1, 1,
-              1, 1, 0, 1,
-              1, 1, 1, 0);
-  // Each entry in |a| should be 1 away from the corresponding entry in |b|.
-  // This means the matrix distance should be sqrt(num_entries) = 4.
-  EXPECT_EQ(4, MatrixDistance(a, b));
-
-  Transform c = b;
-  EXPECT_EQ(0, MatrixDistance(b, c));
-}
-
 }  // namespace
 }  // namespace gfx