WebContentsObserver and TabObserver update for PlzNavigate

chrome/android/java/src/org/chromium/chrome/browser/tab/TabObserver.java

 // Copyright 2013 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.tab;
 
 import android.graphics.Bitmap;
+import android.support.annotation.Nullable;
 import android.view.ContextMenu;
 
 import org.chromium.chrome.browser.TabLoadStatus;
 import org.chromium.content.browser.ContentViewCore;
 import org.chromium.content_public.browser.LoadUrlParams;
 import org.chromium.content_public.browser.WebContents;
 
 /**
  * An observer that is notified of changes to a {@link Tab} object.
  */
@@ skipping 217 matching lines @@
      * @param isNavigationToDifferentPage Whether the main frame navigated to a different page.
      * @param isFragmentNavigation        Whether the main frame navigation did not cause changes
      *                                    to the document (for example scrolling to a named anchor
      *                                    or PopState).
      * @param statusCode                  The HTTP status code of the navigation.
      */
     public void onDidNavigateMainFrame(Tab tab, String url, String baseUrl,
             boolean isNavigationToDifferentPage, boolean isFragmentNavigation, int statusCode);
 
     /**
+     * Called when a navigation is started in the WebContents.
+     * @param tab The notifying {@link Tab}.
+     * @param url The validated URL for the loading page.
+     * @param isInMainFrame Whether the navigation is for the main frame.
+     * @param isErrorPage Whether the navigation shows an error page.
+     */
+    public void onDidStartNavigation(
+            Tab tab, String url, boolean isInMainFrame, boolean isErrorPage);
+
+    /**
+     * Called when a navigation is finished i.e. committed, aborted or replaced by a new one.
+     * @param tab The notifying {@link Tab}.
+     * @param url The validated URL for the loading page.
+     * @param isInMainFrame Whether the navigation is for the main frame.
+     * @param isErrorPage Whether the navigation shows an error page.
+     * @param hasCommitted Whether the navigation has committed. This returns true for either
+     *                     successful commits or error pages that replace the previous page
+     *                     (distinguished by |isErrorPage|), and false for errors that leave the
+     *                     user on the previous page.
+     * @param isSamePage Whether the main frame navigation did not cause changes to the
+     *                   document (for example scrolling to a named anchor or PopState).
+     * @param pageTransition The page transition type associated with this navigation.
+     * @param errorCode The net error code if an error occurred prior to commit, otherwise net::OK.
+     */
+    public void onDidFinishNavigation(Tab tab, String url, boolean isInMainFrame,
+            boolean isErrorPage, boolean hasCommitted, boolean isSamePage,
+            @Nullable Integer pageTransition, int errorCode);
+
+    /**
      * Called when the page has painted something non-empty.
      * @param tab The notifying {@link Tab}.
      */
     public void didFirstVisuallyNonEmptyPaint(Tab tab);
 
     /**
      * Called when the theme color is changed
      * @param tab   The notifying {@link Tab}.
      * @param color the new color in ARGB format.
      */
@@ skipping 38 matching lines @@
     public void webContentsCreated(Tab tab, WebContents sourceWebContents,
             long openerRenderProcessId, long openerRenderFrameId, String frameName,
             String targetUrl, WebContents newWebContents);
 
     /**
      * Called when the tab reparenting process has finished.
      * @param tab The notifying {@link Tab}.
      */
     public void onReparentingFinished(Tab tab);
 }