Merge "Support scrolling layers with the mousewheel" into jb-mr1-dev

                                mWebViewPrivate.getVerticalScrollFactor());

                        final int hdelta = (int) (hscroll *

                                mWebViewPrivate.getHorizontalScrollFactor());

                        if (pinScrollBy(hdelta, vdelta, false, 0)) {

                        abortAnimation();

                        int oldTouchMode = mTouchMode;

                        startScrollingLayer(event.getX(), event.getY());

                        doDrag(hdelta, vdelta);

                        mTouchMode = oldTouchMode;

                        return true;

                    }

                }

            }

        }

        }

        return mWebViewPrivate.super_onGenericMotionEvent(event);

    }