Convert drag event position to root frame.

content/public/android/java/src/org/chromium/content/browser/ContentViewCore.java

Index: content/public/android/java/src/org/chromium/content/browser/ContentViewCore.java
diff --git a/content/public/android/java/src/org/chromium/content/browser/ContentViewCore.java b/content/public/android/java/src/org/chromium/content/browser/ContentViewCore.java
index 44a559d9272a39c959bc7627c140541af8144d49..94567e5e0def45f100f61b915b4c4d690e650895 100644
--- a/content/public/android/java/src/org/chromium/content/browser/ContentViewCore.java
+++ b/content/public/android/java/src/org/chromium/content/browser/ContentViewCore.java
@@ -3168,13 +3168,13 @@ public class ContentViewCore implements AccessibilityStateChangeListener, Screen
         int[] locationOnScreen = new int[2];
         mContainerView.getLocationOnScreen(locationOnScreen);
 
-        float xPix = event.getX() + mRenderCoordinates.getScrollXPixInt() + mCurrentTouchOffsetX;
-        float yPix = event.getY() + mRenderCoordinates.getScrollYPixInt() + mCurrentTouchOffsetY;
+        float xPix = event.getX() + mCurrentTouchOffsetX;
+        float yPix = event.getY() + mCurrentTouchOffsetY;
 
-        int xCss = (int) mRenderCoordinates.fromPixToLocalCss(xPix);
-        int yCss = (int) mRenderCoordinates.fromPixToLocalCss(yPix);
-        int screenXCss = (int) mRenderCoordinates.fromPixToLocalCss(xPix + locationOnScreen[0]);
-        int screenYCss = (int) mRenderCoordinates.fromPixToLocalCss(yPix + locationOnScreen[1]);
+        int xCss = (int) mRenderCoordinates.fromPixToDip(xPix);
+        int yCss = (int) mRenderCoordinates.fromPixToDip(yPix);
+        int screenXCss = (int) mRenderCoordinates.fromPixToDip(xPix + locationOnScreen[0]);
+        int screenYCss = (int) mRenderCoordinates.fromPixToDip(yPix + locationOnScreen[1]);
 
         nativeOnDragEvent(mNativeContentViewCore, event.getAction(), xCss, yCss, screenXCss,
                 screenYCss, mimeTypes, content.toString());