Rename PageLifecycleObserver to PageVisibilityObserver

third_party/WebKit/Source/core/html/HTMLCanvasElement.cpp

 /*
  * Copyright (C) 2004, 2006, 2007 Apple Inc. All rights reserved.
  * Copyright (C) 2007 Alp Toker <alp@atoker.com>
  * Copyright (C) 2010 Torch Mobile (Beijing) Co. Ltd. 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.
@@ skipping 122 matching lines @@
     DCHECK(canCreateImageBuffer(size));
     sk_sp<SkSurface> surface = SkSurface::MakeRasterN32Premul(size.width(), size.height());
     return StaticBitmapImage::create(fromSkSp(surface->makeImageSnapshot()));
 }
 
 } // namespace
 
 inline HTMLCanvasElement::HTMLCanvasElement(Document& document)
     : HTMLElement(canvasTag, document)
     , ContextLifecycleObserver(&document)
-    , PageLifecycleObserver(document.page())
+    , PageVisibilityObserver(document.page())
     , m_size(DefaultWidth, DefaultHeight)
     , m_ignoreReset(false)
     , m_externallyAllocatedMemory(0)
     , m_originClean(true)
     , m_didFailToCreateImageBuffer(false)
     , m_imageBufferIsClear(false)
 {
     CanvasMetrics::countCanvasContextUsage(CanvasMetrics::CanvasCreated);
 }
 
@@ skipping 739 matching lines @@
 {
     if (m_context && m_context->is2d())
         m_context->loseContext(CanvasRenderingContext::RealLostContext);
 }
 
 DEFINE_TRACE(HTMLCanvasElement)
 {
     visitor->trace(m_listeners);
     visitor->trace(m_context);
     ContextLifecycleObserver::trace(visitor);
-    PageLifecycleObserver::trace(visitor);
+    PageVisibilityObserver::trace(visitor);
     HTMLElement::trace(visitor);
 }
 
 DEFINE_TRACE_WRAPPERS(HTMLCanvasElement)
 {
     visitor->traceWrappers(m_context);
     HTMLElement::traceWrappers(visitor);
 }
 
 void HTMLCanvasElement::updateExternallyAllocatedMemory() const
@@ skipping 134 matching lines @@
 
 void HTMLCanvasElement::styleDidChange(const ComputedStyle* oldStyle, const ComputedStyle& newStyle)
 {
     if (m_context)
         m_context->styleDidChange(oldStyle, newStyle);
 }
 
 void HTMLCanvasElement::didMoveToNewDocument(Document& oldDocument)
 {
     ContextLifecycleObserver::setContext(&document());
-    PageLifecycleObserver::setContext(document().page());
+    PageVisibilityObserver::setContext(document().page());
     HTMLElement::didMoveToNewDocument(oldDocument);
 }
 
 PassRefPtr<Image> HTMLCanvasElement::getSourceImageForCanvas(SourceImageStatus* status, AccelerationHint hint, SnapshotReason reason, const FloatSize&) const
 {
     if (!width() || !height()) {
         *status = ZeroSizeCanvasSourceImageStatus;
         return nullptr;
     }
 
@@ skipping 125 matching lines @@
 
 bool HTMLCanvasElement::createSurfaceLayer()
 {
     DCHECK(!m_surfaceLayerBridge);
     std::unique_ptr<CanvasSurfaceLayerBridgeClient> bridgeClient = wrapUnique(new CanvasSurfaceLayerBridgeClientImpl());
     m_surfaceLayerBridge = wrapUnique(new CanvasSurfaceLayerBridge(std::move(bridgeClient)));
     return m_surfaceLayerBridge->createSurfaceLayer(this->width(), this->height());
 }
 
 } // namespace blink