Remove unused V8 integration code in Sky

sky/engine/bindings/core/v8/ScriptGCEvent.cpp

-/*
-* Copyright (C) 2010 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.
-*/
-
-#include "sky/engine/config.h"
-#include "sky/engine/bindings/core/v8/ScriptGCEvent.h"
-
-#include "sky/engine/bindings/core/v8/V8Binding.h"
-#include "sky/engine/core/inspector/ScriptGCEventListener.h"
-
-#include "sky/engine/wtf/CurrentTime.h"
-
-namespace blink {
-
-static GCEventData* isolateGCEventData()
-{
-    V8PerIsolateData* isolateData = V8PerIsolateData::from(v8::Isolate::GetCurrent());
-    ASSERT(isolateData);
-    return isolateData->gcEventData();
-}
-
-void ScriptGCEvent::addEventListener(ScriptGCEventListener* eventListener)
-{
-    GCEventData::GCEventListeners& listeners = isolateGCEventData()->listeners();
-    if (listeners.isEmpty()) {
-        v8::V8::AddGCPrologueCallback(ScriptGCEvent::gcPrologueCallback);
-        v8::V8::AddGCEpilogueCallback(ScriptGCEvent::gcEpilogueCallback);
-    }
-    listeners.append(eventListener);
-}
-
-void ScriptGCEvent::removeEventListener(ScriptGCEventListener* eventListener)
-{
-    ASSERT(eventListener);
-    GCEventData::GCEventListeners& listeners = isolateGCEventData()->listeners();
-    ASSERT(!listeners.isEmpty());
-    size_t i = listeners.find(eventListener);
-    ASSERT(i != kNotFound);
-    listeners.remove(i);
-    if (listeners.isEmpty()) {
-        v8::V8::RemoveGCPrologueCallback(ScriptGCEvent::gcPrologueCallback);
-        v8::V8::RemoveGCEpilogueCallback(ScriptGCEvent::gcEpilogueCallback);
-    }
-}
-
-void ScriptGCEvent::getHeapSize(HeapInfo& info)
-{
-    v8::HeapStatistics heapStatistics;
-    v8::Isolate::GetCurrent()->GetHeapStatistics(&heapStatistics);
-    info.usedJSHeapSize = heapStatistics.used_heap_size();
-    info.totalJSHeapSize = heapStatistics.total_physical_size();
-    info.jsHeapSizeLimit = heapStatistics.heap_size_limit();
-}
-
-size_t ScriptGCEvent::getUsedHeapSize()
-{
-    v8::HeapStatistics heapStatistics;
-    v8::Isolate::GetCurrent()->GetHeapStatistics(&heapStatistics);
-    return heapStatistics.used_heap_size();
-}
-
-void ScriptGCEvent::gcPrologueCallback(v8::GCType type, v8::GCCallbackFlags flags)
-{
-    GCEventData* gcEventData = isolateGCEventData();
-    gcEventData->setStartTime(WTF::monotonicallyIncreasingTime());
-    gcEventData->setUsedHeapSize(getUsedHeapSize());
-}
-
-void ScriptGCEvent::gcEpilogueCallback(v8::GCType type, v8::GCCallbackFlags flags)
-{
-    GCEventData* gcEventData = isolateGCEventData();
-    if (!gcEventData->usedHeapSize())
-        return;
-    double endTime = WTF::monotonicallyIncreasingTime();
-    size_t usedHeapSize = getUsedHeapSize();
-    size_t collectedBytes = usedHeapSize > gcEventData->usedHeapSize() ? 0 : gcEventData->usedHeapSize() - usedHeapSize;
-    GCEventData::GCEventListeners& listeners = gcEventData->listeners();
-    for (GCEventData::GCEventListeners::iterator i = listeners.begin(); i != listeners.end(); ++i)
-        (*i)->didGC(gcEventData->startTime(), endTime, collectedBytes);
-    gcEventData->clear();
-}
-
-} // namespace blink
-