Fix common axes logic to detect negated axes as not common

third_party/WebKit/LayoutTests/animations/rotate3d-negated-axes.html

Index: third_party/WebKit/LayoutTests/animations/rotate3d-negated-axes.html
diff --git a/third_party/WebKit/LayoutTests/animations/rotate3d-negated-axes.html b/third_party/WebKit/LayoutTests/animations/rotate3d-negated-axes.html
new file mode 100644
index 0000000000000000000000000000000000000000..bef9621ca1c1cfa49c6a0e628a3e0e8468c71230
--- /dev/null
+++ b/third_party/WebKit/LayoutTests/animations/rotate3d-negated-axes.html
@@ -0,0 +1,13 @@
+<style>
+@keyframes test {
+  from { transform: rotate3d(0, 0, 1, 90deg); }
+  to { transform: rotate3d(0, 0, -1, 90deg); }
+}
+#target {
+  animation: test 2s -1s paused;
+  width: 100px;
+  height: 100px;
+  border: solid;
+}
+</style>
+<div id="target"></div>