added scroll control support to WebView

import android.content.ClipboardManager;

import android.content.ClipboardManager;

import android.content.Context;

import android.content.Context;

import android.content.DialogInterface;

import android.content.DialogInterface;

import android.content.Intent;

import android.content.DialogInterface.OnCancelListener;

import android.content.DialogInterface.OnCancelListener;

import android.content.Intent;

import android.database.DataSetObserver;

import android.database.DataSetObserver;

import android.graphics.Bitmap;

import android.graphics.Bitmap;

import android.graphics.Canvas;

import android.graphics.Canvas;

import android.os.Bundle;

import android.os.Bundle;

import android.os.Handler;

import android.os.Handler;

import android.os.Message;

import android.os.Message;

import android.os.ServiceManager;

import android.os.SystemClock;

import android.os.SystemClock;

import android.speech.tts.TextToSpeech;

import android.speech.tts.TextToSpeech;

import android.text.Selection;

import android.text.Selection;

import android.widget.AbsoluteLayout;

import android.widget.AbsoluteLayout;

import android.widget.Adapter;

import android.widget.Adapter;

import android.widget.AdapterView;

import android.widget.AdapterView;

import android.widget.AdapterView.OnItemClickListener;

import android.widget.ArrayAdapter;

import android.widget.ArrayAdapter;

import android.widget.CheckedTextView;

import android.widget.CheckedTextView;

import android.widget.LinearLayout;

import android.widget.LinearLayout;

import android.widget.ListView;

import android.widget.ListView;

import android.widget.Scroller;

import android.widget.Scroller;

import android.widget.Toast;

import android.widget.Toast;

import android.widget.AdapterView.OnItemClickListener;

import junit.framework.Assert;

import java.io.File;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileInputStream;

import java.util.Map;

import java.util.Map;

import java.util.Set;

import java.util.Set;

import junit.framework.Assert;

/**

/**

 * <p>A View that displays web pages. This class is the basis upon which you

 * <p>A View that displays web pages. This class is the basis upon which you

 * can roll your own web browser or simply display some online content within your Activity.

 * can roll your own web browser or simply display some online content within your Activity.

    /*

    /*

     * Return the amount of the titlebarview (if any) that is visible

     * Return the amount of the titlebarview (if any) that is visible

     *

     * @hide

     */

     */

    int getVisibleTitleHeight() {

    public int getVisibleTitleHeight() {

        return Math.max(getTitleHeight() - mScrollY, 0);

        return Math.max(getTitleHeight() - mScrollY, 0);

    }

    }

        mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response);

        mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response);

    }

    }

    /**

     * Request the scroller to abort any ongoing animation

     *

     * @hide

     */

    public void stopScroll() {

        mScroller.forceFinished(true);

        mLastVelocity = 0;

    }

    @Override

    @Override

    public void computeScroll() {

    public void computeScroll() {

        if (mScroller.computeScrollOffset()) {

        if (mScroller.computeScrollOffset()) {