Allow going fullscreen during a screen orientation change handler.

third_party/WebKit/Source/platform/ScopedOrientationChangeIndicatorTest.cpp

+// Copyright 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/ScopedOrientationChangeIndicator.h"
+
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace blink {
+
+TEST(ScopedOrientationChangeIndicatorTest, InitialState)
+{
+    EXPECT_FALSE(ScopedOrientationChangeIndicator::processingOrientationChange());
+}
+
+TEST(ScopedOrientationChangeIndicatorTest, ConstructOneIndicatorWithGesture)
+{
+    ScopedOrientationChangeIndicator indicator;
+
+    EXPECT_TRUE(ScopedOrientationChangeIndicator::processingOrientationChange());
+}
+
+TEST(ScopedOrientationChangeIndicatorTest, MultipleIndicatorInTheSameScope)
+{
+    ScopedOrientationChangeIndicator indicator1;
+
+    EXPECT_TRUE(ScopedOrientationChangeIndicator::processingOrientationChange());
+
+    ScopedOrientationChangeIndicator indicator2;
+
+    EXPECT_TRUE(ScopedOrientationChangeIndicator::processingOrientationChange());
+}
+
+TEST(ScopedOrientationChangeIndicatorTest, DestructResetsStateUsingGesture)
+{
+    {
+        ScopedOrientationChangeIndicator indicator;
+    }
+
+    EXPECT_FALSE(ScopedOrientationChangeIndicator::processingOrientationChange());
+}
+
+TEST(ScopedOrientationChangeIndicatorTest, DestructResetsStateUsingNoGesture)
+{
+    ScopedOrientationChangeIndicator indicator;
+    {
+        ScopedOrientationChangeIndicator indicator;
+    }
+
+    EXPECT_TRUE(ScopedOrientationChangeIndicator::processingOrientationChange());
+}
+
+} // namespace blink