Invalid press events don't create multiple pointers with the same id.

ui/aura/gestures/gesture_recognizer_unittest.cc

Index: ui/aura/gestures/gesture_recognizer_unittest.cc
diff --git a/ui/aura/gestures/gesture_recognizer_unittest.cc b/ui/aura/gestures/gesture_recognizer_unittest.cc
index fed5ea462eef8f1241a98d20c385247c90c0e631..951aa443f5de43b8a99f664072f1a8e4e788b68a 100644
--- a/ui/aura/gestures/gesture_recognizer_unittest.cc
+++ b/ui/aura/gestures/gesture_recognizer_unittest.cc
@@ -2554,7 +2554,7 @@ TEST_F(GestureRecognizerTest, PressDoesNotCrash) {
   // there is at least one case where we need to allow a touch press
   // from a currently used touch id. See crbug.com/373125 for details.
   EXPECT_TRUE(delegate->begin());
-  EXPECT_FALSE(delegate->tap_down());
+  EXPECT_TRUE(delegate->tap_down());
   EXPECT_TRUE(delegate->tap_cancel());
   EXPECT_FALSE(delegate->scroll_begin());
 }