[Android] Scroll to the TLD in the omnibox for http sites.

chrome/android/java/src/org/chromium/chrome/browser/omnibox/UrlBar.java

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 package org.chromium.chrome.browser.omnibox;
 
 import android.content.ClipData;
 import android.content.ClipboardManager;
 import android.content.Context;
 import android.content.res.Resources;
@@ skipping 827 matching lines @@
     /**
      * Overrides the text announced when focusing on the field for accessibility.  This value will
      * be cleared automatically when the text content changes for this view.
      * @param accessibilityOverride The text to be announced instead of the current text value
      *                              (or null if the text content should be read).
      */
     public void setAccessibilityTextOverride(String accessibilityOverride) {
         mAccessibilityTextOverride = accessibilityOverride;
     }
 
-    private void scrollToTLD() {
+    /**
+     * Scroll to ensure the TLD is visible.
+     * @return Whether the TLD was discovered and successfully scrolled to.
+     */
+    public boolean scrollToTLD() {
         Editable url = getText();
-        if (url == null || url.length() < 1) return;
+        if (url == null || url.length() < 1) return false;
         String urlString = url.toString();
-        URL javaUrl;
-        try {
-            javaUrl = new URL(urlString);
-        } catch (MalformedURLException mue) {
-            return;
-        }
-        String host = javaUrl.getHost();
-        if (host == null || host.isEmpty()) return;
-        int hostStart = urlString.indexOf(host);
-        int hostEnd = hostStart + host.length();
-        setSelection(hostEnd);
+        String prePath = LocationBarLayout.splitPathFromUrlDisplayText(urlString).first;
+        if (prePath == null || prePath.isEmpty()) return false;
+        setSelection(prePath.length());
+        return true;
     }
 
     @Override
     protected void onTextChanged(CharSequence text, int start, int lengthBefore, int lengthAfter) {
         if (DEBUG) {
             Log.i(TAG, "onTextChanged -- text: %s, start: %d, lengthBefore: %d, lengthAfter: %d",
                     text, start, lengthBefore, lengthAfter);
         }
 
         super.onTextChanged(text, start, lengthBefore, lengthAfter);
@@ skipping 355 matching lines @@
             return (int) paint.measureText(ELLIPSIS);
         }
 
         @Override
         public void draw(Canvas canvas, CharSequence text, int start, int end,
                 float x, int top, int y, int bottom, Paint paint) {
             canvas.drawText(ELLIPSIS, x, y, paint);
         }
     }
 }