Remove codes related to scaling in GraphicsLayer tree.

Source/WebKit/chromium/src/PageOverlay.cpp

Index: Source/WebKit/chromium/src/PageOverlay.cpp
diff --git a/Source/WebKit/chromium/src/PageOverlay.cpp b/Source/WebKit/chromium/src/PageOverlay.cpp
index 566f7a5b87348cf9709d8795c738fe067661dee7..b2560a79dd011aa3a4dcef5ef909c6bf459ac751 100644
--- a/Source/WebKit/chromium/src/PageOverlay.cpp
+++ b/Source/WebKit/chromium/src/PageOverlay.cpp
@@ -66,9 +66,9 @@ PageOverlay::PageOverlay(WebViewImpl* viewImpl, WebPageOverlay* overlay)
 
 class OverlayGraphicsLayerClientImpl : public WebCore::GraphicsLayerClient {
 public:
-    static PassOwnPtr<OverlayGraphicsLayerClientImpl*> create(WebViewImpl* webViewImpl, WebPageOverlay* overlay)
+    static PassOwnPtr<OverlayGraphicsLayerClientImpl*> create(WebPageOverlay* overlay)
     {
-        return adoptPtr(new OverlayGraphicsLayerClientImpl(webViewImpl, overlay));
+        return adoptPtr(new OverlayGraphicsLayerClientImpl(overlay));
     }
 
     virtual ~OverlayGraphicsLayerClientImpl() { }
@@ -82,25 +82,13 @@ public:
         gc.restore();
     }
 
-    virtual float deviceScaleFactor() const
-    {
-        return m_webViewImpl->deviceScaleFactor();
-    }
-
-    virtual float pageScaleFactor() const
-    {
-        return m_webViewImpl->pageScaleFactor();
-    }
-
 private:
-    OverlayGraphicsLayerClientImpl(WebViewImpl* webViewImpl, WebPageOverlay* overlay)
+    explicit OverlayGraphicsLayerClientImpl(WebPageOverlay* overlay)
         : m_overlay(overlay)
-        , m_webViewImpl(webViewImpl)
     {
     }
 
     WebPageOverlay* m_overlay;
-    WebViewImpl* m_webViewImpl;
 };
 
 void PageOverlay::clear()
@@ -119,7 +107,7 @@ void PageOverlay::update()
     invalidateWebFrame();
 
     if (!m_layer) {
-        m_layerClient = OverlayGraphicsLayerClientImpl::create(m_viewImpl, m_overlay);
+        m_layerClient = OverlayGraphicsLayerClientImpl::create(m_overlay);
         m_layer = GraphicsLayer::create(m_viewImpl->graphicsLayerFactory(), m_layerClient.get());
         m_layer->setName("WebViewImpl page overlay content");
         m_layer->setDrawsContent(true);