Document user gesture state should be able to propagate over postMessage

third_party/WebKit/Source/platform/UserGestureIndicatorTest.cpp

 // Copyright (c) 2016 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 "platform/UserGestureIndicator.h"
 
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace blink {
 
 class TestUserGestureToken final : public UserGestureToken {
   WTF_MAKE_NONCOPYABLE(TestUserGestureToken);
 
  public:
   static PassRefPtr<UserGestureToken> create(
       Status status = PossiblyExistingGesture) {
     return adoptRef(new TestUserGestureToken(status));
   }
 
-  ~TestUserGestureToken() final {}
-
  private:
   TestUserGestureToken(Status status) : UserGestureToken(status) {}
 };
 
 // Checks for the initial state of UserGestureIndicator.
 TEST(UserGestureIndicatorTest, InitialState) {
   EXPECT_FALSE(UserGestureIndicator::utilizeUserGesture());
   EXPECT_EQ(nullptr, UserGestureIndicator::currentToken());
   EXPECT_FALSE(UserGestureIndicator::consumeUserGesture());
 }
@@ skipping 137 matching lines @@
   }
 
   // The callback isn't invoked outside the scope of the UGI
   EXPECT_FALSE(UserGestureIndicator::utilizeUserGesture());
   EXPECT_EQ(0u, cb.getAndResetUsedCount());
   EXPECT_FALSE(UserGestureIndicator::consumeUserGesture());
   EXPECT_EQ(0u, cb.getAndResetUsedCount());
 }
 
 }  // namespace blink