Preloading support in browser

	   Apps like the QSB can request the browser to preload a
	   web page.
           - preloaded pages are not added to the browser history
	     if they'r not seen by the user
	   - when a request is received, a new tab is created for the
	     preloaded page, but not added to the tab list
 	   - upon receiving the view intent for the preloaded page
             the tab is added to the tab list, and shown
	   - if several pages are preloaded consecutively in the same tab,
             the back stack is cleared before it is displayed
           - preloaded pages use the main browser cookie jar, so pages that
             have never been viewed by the user can drop cookies

Change-Id: I9ed21f2c9560fda0ed042b460b73bb33988a2e8a
diff --git a/src/com/android/browser/BaseUi.java b/src/com/android/browser/BaseUi.java
index d364378..1836e6e 100644
--- a/src/com/android/browser/BaseUi.java
+++ b/src/com/android/browser/BaseUi.java
@@ -60,7 +60,7 @@
 /**
  * UI interface definitions
  */
-public abstract class BaseUi implements UI, WebViewFactory, OnTouchListener {
+public abstract class BaseUi implements UI, OnTouchListener {
 
     private static final String LOGTAG = "BaseUi";
 
@@ -145,41 +145,6 @@
                 config.getScaledTouchSlop());
     }
 
-    @Override
-    public WebView createWebView(boolean privateBrowsing) {
-        // Create a new WebView
-        BrowserWebView w = new BrowserWebView(mActivity, null,
-                android.R.attr.webViewStyle, privateBrowsing);
-        initWebViewSettings(w);
-        return w;
-    }
-
-    @Override
-    public WebView createSubWebView(boolean privateBrowsing) {
-        return createWebView(privateBrowsing);
-    }
-
-    /**
-     * common webview initialization
-     * @param w the webview to initialize
-     */
-    protected void initWebViewSettings(WebView w) {
-        w.setScrollbarFadingEnabled(true);
-        w.setScrollBarStyle(View.SCROLLBARS_OUTSIDE_OVERLAY);
-        w.setMapTrackballToArrowKeys(false); // use trackball directly
-        // Enable the built-in zoom
-        w.getSettings().setBuiltInZoomControls(true);
-        boolean supportsMultiTouch = mActivity.getPackageManager()
-                .hasSystemFeature(PackageManager.FEATURE_TOUCHSCREEN_MULTITOUCH);
-        w.getSettings().setDisplayZoomControls(!supportsMultiTouch);
-        w.setExpandedTileBounds(true);  // smoother scrolling
-
-        // Add this WebView to the settings observer list and update the
-        // settings
-        final BrowserSettings s = BrowserSettings.getInstance();
-        s.startManagingSettings(w.getSettings());
-    }
-
     private void cancelStopToast() {
         if (mStopToast != null) {
             mStopToast.cancel();