Route selection bounds updates through WebLayerTreeView

Source/web/WebViewImpl.h

Index: Source/web/WebViewImpl.h
diff --git a/Source/web/WebViewImpl.h b/Source/web/WebViewImpl.h
index 0b89a6926d6cb5b7b9ec9eab57727fab559d4dda..f6641fc3c513906ccebc174cc41e4322df3f92f1 100644
--- a/Source/web/WebViewImpl.h
+++ b/Source/web/WebViewImpl.h
@@ -79,6 +79,8 @@ class WebPlugin;
 class WebSettingsImpl;
 class FullscreenController;
 
+struct WebSelectionBound;
+
 class WebViewImpl FINAL : public WebView
     , public RefCounted<WebViewImpl>
     , public WebGestureCurveTarget
@@ -452,6 +454,7 @@ public:
     void exitFullScreenForElement(blink::Element*);
 
     void clearCompositedSelectionBounds();
+    void updateCompositedSelectionBounds(const WebSelectionBound& anchor, const WebSelectionBound& focus);
 
     // Exposed for the purpose of overriding device metrics.
     void sendResizeEventAndRepaint();