Revert r160071 "Web Animations: Implement AnimationClock and fix start time of animations"

Source/core/animation/AnimationClock.h

Index: Source/core/animation/AnimationClock.h
diff --git a/Source/core/animation/AnimationClock.h b/Source/core/animation/AnimationClock.h
deleted file mode 100644
index b5d3dcd1c8a9d9e1fdaf987ca6a8937b0a823681..0000000000000000000000000000000000000000
--- a/Source/core/animation/AnimationClock.h
+++ /dev/null
@@ -1,76 +0,0 @@
-/*
- * Copyright (C) 2013 Google Inc. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met:
- *
- *     * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *     * Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following disclaimer
- * in the documentation and/or other materials provided with the
- * distribution.
- *     * Neither the name of Google Inc. nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#ifndef AnimationClock_h
-#define AnimationClock_h
-
-#include "wtf/CurrentTime.h"
-#include "wtf/PassOwnPtr.h"
-
-namespace WebCore {
-
-class AnimationClock {
-public:
-    static PassOwnPtr<AnimationClock> create(WTF::TimeFunction monotonicallyIncreasingTime = WTF::monotonicallyIncreasingTime)
-    {
-        return adoptPtr(new AnimationClock(monotonicallyIncreasingTime));
-    }
-
-    void updateTime(double time)
-    {
-        ASSERT(m_time <= time);
-        m_time = time;
-        m_frozen = true;
-    }
-
-    double currentTime()
-    {
-        if (!m_frozen)
-            updateTime(monotonicallyIncreasingTime());
-        return m_time;
-    }
-
-    void unfreeze() { m_frozen = false; }
-
-private:
-    AnimationClock(WTF::TimeFunction monotonicallyIncreasingTime)
-        : monotonicallyIncreasingTime(monotonicallyIncreasingTime)
-        , m_time(0)
-        , m_frozen(false)
-    {
-    }
-    WTF::TimeFunction monotonicallyIncreasingTime;
-    double m_time;
-    bool m_frozen;
-};
-
-} // namespace WebCore
-
-#endif // AnimationClock_h