Convert drag event position to root frame.

third_party/WebKit/Source/web/WebViewImpl.h

 /*
  * Copyright (C) 2010 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 218 matching lines @@
     void disableAutoResizeMode() override;
     void performMediaPlayerAction(
         const WebMediaPlayerAction& action,
         const WebPoint& location) override;
     void performPluginAction(
         const WebPluginAction&,
         const WebPoint&) override;
     WebHitTestResult hitTestResultAt(const WebPoint&) override;
     WebHitTestResult hitTestResultForTap(const WebPoint&, const WebSize&) override;
     void dragSourceEndedAt(
-        const WebPoint& clientPoint,
+        const WebPoint& pointInViewport,
         const WebPoint& screenPoint,
         WebDragOperation) override;
     void dragSourceSystemDragEnded() override;
     WebDragOperation dragTargetDragEnter(
         const WebDragData&,
-        const WebPoint& clientPoint,
+        const WebPoint& pointInViewport,
         const WebPoint& screenPoint,
         WebDragOperationsMask operationsAllowed,
         int modifiers) override;
     WebDragOperation dragTargetDragOver(
-        const WebPoint& clientPoint,
+        const WebPoint& pointInViewport,
         const WebPoint& screenPoint,
         WebDragOperationsMask operationsAllowed,
         int modifiers) override;
     void dragTargetDragLeave() override;
     void dragTargetDrop(
         const WebDragData&,
-        const WebPoint& clientPoint,
+        const WebPoint& pointInViewport,
         const WebPoint& screenPoint,
         int modifiers) override;
     void spellingMarkers(WebVector<uint32_t>* markers) override;
     void removeSpellingMarkersUnderWords(const WebVector<WebString>& words) override;
     unsigned long createUniqueIdentifierForRequest() override;
     void enableDeviceEmulation(const WebDeviceEmulationParams&) override;
     void disableDeviceEmulation() override;
     WebAXObject accessibilityObject() override;
     void setSelectionColors(unsigned activeBackgroundColor,
                                     unsigned activeForegroundColor,
@@ skipping 302 matching lines @@
     bool scrollViewWithKeyboard(int keyCode, int modifiers);
 
     void hideSelectPopup();
 
     HitTestResult hitTestResultForRootFramePos(const IntPoint&);
     HitTestResult hitTestResultForViewportPos(const IntPoint&);
 
     // Consolidate some common code between starting a drag over a target and
     // updating a drag over a target. If we're starting a drag, |isEntering|
     // should be true.
-    WebDragOperation dragTargetDragEnterOrOver(const WebPoint& clientPoint,
+    WebDragOperation dragTargetDragEnterOrOver(const WebPoint& pointInViewport,
                                                const WebPoint& screenPoint,
                                                DragAction,
                                                int modifiers);
 
     void configureAutoResizeMode();
 
     void initializeLayerTreeView();
 
     void setIsAcceleratedCompositingActive(bool);
     void doComposite();
@@ skipping 189 matching lines @@
     Persistent<ResizeViewportAnchor> m_resizeViewportAnchor;
 };
 
 // We have no ways to check if the specified WebView is an instance of
 // WebViewImpl because WebViewImpl is the only implementation of WebView.
 DEFINE_TYPE_CASTS(WebViewImpl, WebView, webView, true, true);
 
 } // namespace blink
 
 #endif