Move platform/MemoryPurgeController -> core/dom/MemoryCoordinator

third_party/WebKit/Source/core/page/Page.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 Apple Inc. All Rights Reserved.
  * Copyright (C) 2008 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  */
 
 #include "core/page/Page.h"
 
 #include "core/css/resolver/ViewportStyleResolver.h"
 #include "core/dom/ClientRectList.h"
 #include "core/dom/StyleChangeReason.h"
 #include "core/dom/VisitedLinkState.h"
 #include "core/editing/DragCaretController.h"
 #include "core/editing/commands/UndoStack.h"
 #include "core/editing/markers/DocumentMarkerController.h"
 #include "core/events/Event.h"
-#include "core/fetch/MemoryCache.h"
 #include "core/fetch/ResourceFetcher.h"
 #include "core/frame/DOMTimer.h"
 #include "core/frame/FrameConsole.h"
 #include "core/frame/FrameHost.h"
 #include "core/frame/FrameView.h"
 #include "core/frame/RemoteFrame.h"
 #include "core/frame/RemoteFrameView.h"
 #include "core/frame/Settings.h"
 #include "core/frame/VisualViewport.h"
 #include "core/html/HTMLMediaElement.h"
@@ skipping 42 matching lines @@
         }
     }
 
     AtomicString eventName = online ? EventTypeNames::online : EventTypeNames::offline;
     for (const auto& frame : frames) {
         frame->domWindow()->dispatchEvent(Event::create(eventName));
         InspectorInstrumentation::networkStateChanged(frame.get(), online);
     }
 }
 
-void Page::onMemoryPressure()
-{
-    for (Page* page : ordinaryPages())
-        page->memoryPurgeController().purgeMemory();
-}
-
 float deviceScaleFactor(LocalFrame* frame)
 {
     if (!frame)
         return 1;
     Page* page = frame->page();
     if (!page)
         return 1;
     return page->deviceScaleFactor();
 }
 
 Page* Page::createOrdinary(PageClients& pageClients)
 {
     Page* page = create(pageClients);
     ordinaryPages().add(page);
-    page->memoryPurgeController().registerClient(page);
     return page;
 }
 
 Page::Page(PageClients& pageClients)
     : SettingsDelegate(Settings::create())
     , m_animator(PageAnimator::create(*this))
     , m_autoscrollController(AutoscrollController::create(*this))
     , m_chromeClient(pageClients.chromeClient)
     , m_dragCaretController(DragCaretController::create())
     , m_dragController(DragController::create(this))
@@ skipping 34 matching lines @@
 }
 
 ScrollingCoordinator* Page::scrollingCoordinator()
 {
     if (!m_scrollingCoordinator && m_settings->acceleratedCompositingEnabled())
         m_scrollingCoordinator = ScrollingCoordinator::create(this);
 
     return m_scrollingCoordinator.get();
 }
 
-MemoryPurgeController& Page::memoryPurgeController()
-{
-    if (!m_memoryPurgeController)
-        m_memoryPurgeController = MemoryPurgeController::create();
-
-    return *m_memoryPurgeController;
-}
-
 String Page::mainThreadScrollingReasonsAsText()
 {
     if (ScrollingCoordinator* scrollingCoordinator = this->scrollingCoordinator())
         return scrollingCoordinator->mainThreadScrollingReasonsAsText();
 
     return String();
 }
 
 ClientRectList* Page::nonFastScrollableRects(const LocalFrame* frame)
 {
@@ skipping 287 matching lines @@
     // an event so we keep the frames alive until we are done.
     for (Frame* frame = mainFrame(); frame; frame = frame->tree().traverseNext()) {
         if (frame->isLocalFrame())
             frames.append(toLocalFrame(frame));
     }
 
     for (unsigned i = 0; i < frames.size(); ++i)
         frames[i]->localDOMWindow()->acceptLanguagesChanged();
 }
 
-void Page::purgeMemory(DeviceKind deviceKind)
-{
-    if (deviceKind == DeviceKind::LowEnd)
-        memoryCache()->pruneAll();
-}
-
 DEFINE_TRACE(Page)
 {
     visitor->trace(m_animator);
     visitor->trace(m_autoscrollController);
     visitor->trace(m_chromeClient);
     visitor->trace(m_dragCaretController);
     visitor->trace(m_dragController);
     visitor->trace(m_focusController);
     visitor->trace(m_contextMenuController);
     visitor->trace(m_pointerLockController);
     visitor->trace(m_scrollingCoordinator);
     visitor->trace(m_undoStack);
     visitor->trace(m_mainFrame);
     visitor->trace(m_validationMessageClient);
     visitor->trace(m_frameHost);
-    visitor->trace(m_memoryPurgeController);
     Supplementable<Page>::trace(visitor);
     PageLifecycleNotifier::trace(visitor);
-    MemoryPurgeClient::trace(visitor);
 }
 
 void Page::layerTreeViewInitialized(WebLayerTreeView& layerTreeView)
 {
     if (scrollingCoordinator())
         scrollingCoordinator()->layerTreeViewInitialized(layerTreeView);
 }
 
 void Page::willCloseLayerTreeView(WebLayerTreeView& layerTreeView)
 {
@@ skipping 42 matching lines @@
 {
 }
 
 Page::PageClients::~PageClients()
 {
 }
 
 template class CORE_TEMPLATE_EXPORT Supplement<Page>;
 
 } // namespace blink