1 files changed, 0 insertions, 178 deletions
diff --git a/Source/WebCore/page/PageThrottler.cpp b/Source/WebCore/page/PageThrottler.cpp
deleted file mode 100644
index 28c63f1e1..000000000
--- a/Source/WebCore/page/PageThrottler.cpp
+++ /dev/null
@@ -1,178 +0,0 @@
-/*
- * Copyright (C) 2013 Apple 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:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. 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.
- *
- * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS 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 APPLE INC. OR ITS 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.
- */
-
-#include "config.h"
-#include "PageThrottler.h"
-
-#include "Chrome.h"
-#include "ChromeClient.h"
-#include "MainFrame.h"
-#include "Page.h"
-#include "PageActivityAssertionToken.h"
-#include <wtf/StdLibExtras.h>
-
-namespace WebCore {
-
-static const double kThrottleHysteresisSeconds = 2.0;
-
-PageThrottler::PageThrottler(Page& page)
-    : m_page(page)
-    , m_throttleState(PageNotThrottledState)
-    , m_throttleHysteresisTimer(this, &PageThrottler::throttleHysteresisTimerFired)
-    , m_visuallyNonIdle("Page is not visually idle.")
-{
-    m_page.chrome().client().incrementActivePageCount();
-}
-
-PageThrottler::~PageThrottler()
-{
-    setIsVisuallyIdle(false);
-
-    for (auto it = m_activityTokens.begin(), end = m_activityTokens.end(); it != end; ++it)
-        (*it)->invalidate();
-
-    if (m_throttleState != PageThrottledState)
-        m_page.chrome().client().decrementActivePageCount();
-}
-
-std::unique_ptr<PageActivityAssertionToken> PageThrottler::createActivityToken()
-{
-    return std::make_unique<PageActivityAssertionToken>(*this);
-}
-
-void PageThrottler::throttlePage()
-{
-    m_throttleState = PageThrottledState;
-
-    m_page.chrome().client().decrementActivePageCount();
-
-    for (Frame* frame = &m_page.mainFrame(); frame; frame = frame->tree().traverseNext()) {
-        if (frame->document())
-            frame->document()->scriptedAnimationControllerSetThrottled(true);
-    }
-
-    m_page.throttleTimers();
-}
-
-void PageThrottler::unthrottlePage()
-{
-    PageThrottleState oldState = m_throttleState;
-    m_throttleState = PageNotThrottledState;
-
-    if (oldState == PageNotThrottledState)
-        return;
-
-    if (oldState == PageThrottledState)
-        m_page.chrome().client().incrementActivePageCount();
-    
-    for (Frame* frame = &m_page.mainFrame(); frame; frame = frame->tree().traverseNext()) {
-        if (frame->document())
-            frame->document()->scriptedAnimationControllerSetThrottled(false);
-    }
-
-    m_page.unthrottleTimers();
-}
-
-void PageThrottler::setIsVisuallyIdle(bool isVisuallyIdle)
-{
-    if (isVisuallyIdle) {
-        m_throttleState = PageWaitingToThrottleState;
-        startThrottleHysteresisTimer();
-        if (m_visuallyNonIdle.isActive())
-            m_visuallyNonIdle.endActivity();
-    } else {
-        unthrottlePage();
-        stopThrottleHysteresisTimer();
-        if (!m_visuallyNonIdle.isActive())
-            m_visuallyNonIdle.beginActivity();
-    }
-}
-
-void PageThrottler::stopThrottleHysteresisTimer()
-{
-    m_throttleHysteresisTimer.stop();
-}
-
-void PageThrottler::reportInterestingEvent()
-{
-    if (m_throttleState == PageNotThrottledState)
-        return;
-    if (m_throttleState == PageThrottledState)
-        unthrottlePage();
-    m_throttleState = PageWaitingToThrottleState;
-    startThrottleHysteresisTimer();
-}
-
-void PageThrottler::startThrottleHysteresisTimer()
-{
-    if (m_throttleHysteresisTimer.isActive())
-        m_throttleHysteresisTimer.stop();
-    if (!m_activityTokens.size())
-        m_throttleHysteresisTimer.startOneShot(kThrottleHysteresisSeconds);
-}
-
-void PageThrottler::throttleHysteresisTimerFired(Timer<PageThrottler>&)
-{
-    ASSERT(!m_activityTokens.size());
-    throttlePage();
-}
-
-void PageThrottler::addActivityToken(PageActivityAssertionToken& token)
-{
-    ASSERT(!m_activityTokens.contains(&token));
-
-    m_activityTokens.add(&token);
-
-    // If we've already got events that block throttling we can return early
-    if (m_activityTokens.size() > 1)
-        return;
-
-    if (m_throttleState == PageNotThrottledState)
-        return;
-
-    if (m_throttleState == PageThrottledState)
-        unthrottlePage();
-
-    m_throttleState = PageWaitingToThrottleState;
-    stopThrottleHysteresisTimer();
-}
-
-void PageThrottler::removeActivityToken(PageActivityAssertionToken& token)
-{
-    ASSERT(m_activityTokens.contains(&token));
-
-    m_activityTokens.remove(&token);
-
-    if (m_activityTokens.size())
-        return;
-
-    if (m_throttleState == PageNotThrottledState)
-        return;
-
-    ASSERT(m_throttleState == PageWaitingToThrottleState);
-    startThrottleHysteresisTimer();
-}
-
-}