Factor GraphicsLayerUpdater out of RenderLayerCompositor

Source/core/rendering/compositing/GraphicsLayerUpdater.h

Index: Source/core/rendering/compositing/GraphicsLayerUpdater.h
diff --git a/Source/core/frame/SuspendableTimer.h b/Source/core/rendering/compositing/GraphicsLayerUpdater.h
similarity index 60%
copy from Source/core/frame/SuspendableTimer.h
copy to Source/core/rendering/compositing/GraphicsLayerUpdater.h
index c07f0d73e2726c760c09b64bb286273460f9ca3c..9b9658a2762919cade645aef2298c6e18d87f639 100644
--- a/Source/core/frame/SuspendableTimer.h
+++ b/Source/core/rendering/compositing/GraphicsLayerUpdater.h
@@ -1,5 +1,6 @@
 /*
- * Copyright (C) 2008 Apple Inc. All Rights Reserved.
+ * Copyright (C) 2009, 2010 Apple Inc. All rights reserved.
+ * Copyright (C) 2014 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ -21,39 +22,39 @@
  * 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.
- *
  */
 
-#ifndef SuspendableTimer_h
-#define SuspendableTimer_h
+#ifndef GraphicsLayerUpdater_h
+#define GraphicsLayerUpdater_h
 
-#include "core/dom/ActiveDOMObject.h"
-#include "platform/Timer.h"
+#include "wtf/Vector.h"
 
 namespace WebCore {
 
-class SuspendableTimer : public TimerBase, public ActiveDOMObject {
+class GraphicsLayer;
+class RenderLayer;
+class RenderPart;
+class RenderView;
+
+class GraphicsLayerUpdater {
 public:
-    explicit SuspendableTimer(ExecutionContext*);
-    virtual ~SuspendableTimer();
+    explicit GraphicsLayerUpdater(RenderView&);
+    ~GraphicsLayerUpdater();
 
-    // ActiveDOMObject
-    virtual bool hasPendingActivity() const OVERRIDE FINAL;
-    virtual void stop() OVERRIDE;
-    virtual void suspend() OVERRIDE FINAL;
-    virtual void resume() OVERRIDE FINAL;
+    void updateRecursive(RenderLayer&);
+    void rebuildTree(RenderLayer&, Vector<GraphicsLayer*>& childLayersOfEnclosingLayer, int depth);
 
 private:
-    virtual void fired() = 0;
-
-    double m_nextFireInterval;
-    double m_repeatInterval;
-    bool m_active;
-#if !ASSERT_DISABLED
-    bool m_suspended;
-#endif
+    void update(RenderLayer&);
+
+    RenderView& m_renderView;
+
+    // Used for gathering UMA data about the effect on memory usage of promoting all layers
+    // that have a webkit-transition on opacity or transform and intersect the viewport.
+    double m_pixelsWithoutPromotingAllTransitions;
+    double m_pixelsAddedByPromotingAllTransitions;
 };
 
 } // namespace WebCore
 
-#endif // SuspendableTimer_h
+#endif // GraphicsLayerUpdater_h