Refactor Timer classes in preparation for landing FrameTimers.

third_party/WebKit/Source/core/html/AutoplayExperimentHelper.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 "core/html/AutoplayExperimentHelper.h"
 
 #include "core/dom/Document.h"
 #include "core/frame/Settings.h"
 #include "core/html/HTMLMediaElement.h"
 #include "core/page/Page.h"
@@ skipping 198 matching lines @@
 }
 
 void AutoplayExperimentHelper::triggerAutoplayViewportCheckForTesting()
 {
     // Make sure that the last update appears to be sufficiently far in the
     // past to appear that scrolling has stopped by now in viewportTimerFired.
     m_lastLocationUpdateTime = monotonicallyIncreasingTime() - kViewportTimerPollDelay - 1;
     viewportTimerFired(nullptr);
 }
 
-void AutoplayExperimentHelper::viewportTimerFired(Timer<AutoplayExperimentHelper>*)
+void AutoplayExperimentHelper::viewportTimerFired(TimerBase*)
 {
     double now = monotonicallyIncreasingTime();
     double delta = now - m_lastLocationUpdateTime;
     if (delta < kViewportTimerPollDelay) {
         // If we are not visible, then skip the timer.  It will be started
         // again if we become visible again.
         if (m_wasInViewport)
             m_viewportTimer.startOneShot(kViewportTimerPollDelay - delta, BLINK_FROM_HERE);
 
         return;
@@ skipping 301 matching lines @@
 {
     return client().isHTMLVideoElement() && (enabled(IfViewport) || enabled(IfPartialViewport));
 }
 
 bool AutoplayExperimentHelper::isExperimentEnabled()
 {
     return m_mode != Mode::ExperimentOff;
 }
 
 } // namespace blink