Drag and drop cleans up touch sequences from the source window.

ui/aura/gestures/gesture_recognizer_unittest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <stdint.h>
 
 #include <list>
 
 #include "base/command_line.h"
 #include "base/macros.h"
@@ skipping 2522 matching lines @@
   SetTouchRadius(&press, 40, 0);
   DispatchEventUsingWindowDispatcher(&press);
   EXPECT_TRUE(delegate->tap_down());
   EXPECT_EQ(gfx::Rect(5, 5, 80, 80).ToString(),
             delegate->bounding_box().ToString());
   delegate->Reset();
 
   ui::TouchEvent press2(ui::ET_TOUCH_PRESSED, gfx::Point(55, 45), 7, tes.Now());
   DispatchEventUsingWindowDispatcher(&press2);
 
-  // FIXME(tdresser): this should not generate a tap down; however,
-  // 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_TRUE(delegate->tap_down());
-  EXPECT_TRUE(delegate->tap_cancel());
+  EXPECT_FALSE(delegate->begin());
+  EXPECT_FALSE(delegate->tap_down());
+  EXPECT_FALSE(delegate->tap_cancel());
   EXPECT_FALSE(delegate->scroll_begin());
 }
 
 TEST_F(GestureRecognizerTest, TwoFingerTap) {
   std::unique_ptr<GestureEventConsumeDelegate> delegate(
       new GestureEventConsumeDelegate());
   const int kWindowWidth = 123;
   const int kWindowHeight = 45;
   const int kTouchId1 = 2;
   const int kTouchId2 = 3;
@@ skipping 1883 matching lines @@
   EXPECT_FALSE(queued_delegate2->long_press());
 
   queued_delegate->Reset();
   queued_delegate->WaitUntilReceivedGesture(ui::ET_GESTURE_SHOW_PRESS);
   EXPECT_TRUE(queued_delegate->show_press());
   EXPECT_FALSE(queued_delegate->tap_down());
 }
 
 }  // namespace test
 }  // namespace aura