Remove rootWindowRect from WebWidgetClient and move it to WebViewClient.

third_party/WebKit/public/web/WebViewClient.h

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 92 matching lines @@
 
     // This method enumerates all the files in the path. It returns immediately
     // and asynchronously invokes the WebFileChooserCompletion with all the
     // files in the directory. Returns false if the WebFileChooserCompletion
     // will never be called.
     virtual bool enumerateChosenDirectory(const WebString& path, WebFileChooserCompletion*) { return false; }
 
     // Called when PageImportanceSignals for the WebView is updated.
     virtual void pageImportanceSignalsChanged() { }
 
+    // Called to get the position of the root window containing the widget
+    // in screen coordinates.
+    virtual WebRect rootWindowRect() { return WebRect(); }
+
     // Editing -------------------------------------------------------------
 
     // These methods allow the client to intercept and overrule editing
     // operations.
     virtual void didCancelCompositionOnSelectionChange() { }
     virtual void didChangeContents() { }
 
     // This method is called in response to WebView's handleInputEvent()
     // when the default action for the current keyboard event is not
     // suppressed by the page, to give the embedder a chance to handle
@@ skipping 137 matching lines @@
     void didFocus() override {}
     void didHandleGestureEvent(const WebGestureEvent& event, bool eventCancelled) override {}
     void didInvalidateRect(const WebRect&) override {}
     void didOverscroll(const WebFloatSize& overscrollDelta, const WebFloatSize& accumulatedOverscroll, const WebFloatPoint& positionInViewport, const WebFloatSize& velocityInViewport) override {}
     void didUpdateTextOfFocusedElementByNonUserInput() override {}
     void hasTouchEventHandlers(bool) override {}
     void initializeLayerTreeView() override {}
     WebLayerTreeView* layerTreeView() override { return 0; }
     void onMouseDown(const WebNode& mouseDownNode) override {}
     void resetInputMethod() override {}
-    WebRect rootWindowRect() override { return WebRect(); }
     void scheduleAnimation() override {}
     WebScreenInfo screenInfo() override { return WebScreenInfo(); }
     void setToolTipText(const WebString&, WebTextDirection hint) override {}
     void setTouchAction(WebTouchAction touchAction) override {}
     void setWindowRect(const WebRect&) override {}
     void showImeIfNeeded() override {}
     void showUnhandledTapUIIfNeeded(const WebPoint& tappedPosition, const WebNode& tappedNode, bool pageChanged) override {}
     void show(WebNavigationPolicy) override {}
     WebRect windowRect() override { return WebRect(); }
     WebRect windowResizerRect() override { return WebRect(); }
 
 protected:
     ~WebViewClient() { }
 };
 
 } // namespace blink
 
 #endif