[Android WebView] Synthesize a fake page loading event on page source modification (Re-land)

chrome/android/java/src/org/chromium/chrome/browser/Tab.java

 // Copyright 2014 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;
 
 import android.app.Activity;
 import android.content.Context;
 import android.graphics.Bitmap;
 import android.graphics.Color;
@@ skipping 32 matching lines @@
 import org.chromium.chrome.browser.tabmodel.TabModel.TabLaunchType;
 import org.chromium.chrome.browser.tabmodel.TabModel.TabSelectionType;
 import org.chromium.chrome.browser.tabmodel.TabModelBase;
 import org.chromium.chrome.browser.toolbar.ToolbarModel;
 import org.chromium.chrome.browser.ui.toolbar.ToolbarModelSecurityLevel;
 import org.chromium.components.navigation_interception.InterceptNavigationDelegate;
 import org.chromium.content.browser.ContentView;
 import org.chromium.content.browser.ContentViewClient;
 import org.chromium.content.browser.ContentViewCore;
 import org.chromium.content.browser.WebContentsObserver;
+import org.chromium.content_public.browser.InvalidateTypes;
 import org.chromium.content_public.browser.LoadUrlParams;
 import org.chromium.content_public.browser.WebContents;
 import org.chromium.content_public.common.Referrer;
 import org.chromium.content_public.common.TopControlsState;
 import org.chromium.printing.PrintManagerDelegateImpl;
 import org.chromium.printing.PrintingController;
 import org.chromium.printing.PrintingControllerImpl;
 import org.chromium.ui.WindowOpenDisposition;
 import org.chromium.ui.base.Clipboard;
 import org.chromium.ui.base.LocalizationUtils;
@@ skipping 318 matching lines @@
                 mFullscreenManager.setPersistentFullscreenMode(enableFullscreen);
             }
 
             for (TabObserver observer : mObservers) {
                 observer.onToggleFullscreenMode(Tab.this, enableFullscreen);
             }
         }
 
         @Override
         public void navigationStateChanged(int flags) {
-            if ((flags & INVALIDATE_TYPE_TITLE) != 0) {
+            if ((flags & InvalidateTypes.TITLE) != 0) {
                 for (TabObserver observer : mObservers) observer.onTitleUpdated(Tab.this);
             }
-            if ((flags & INVALIDATE_TYPE_URL) != 0) {
+            if ((flags & InvalidateTypes.URL) != 0) {
                 for (TabObserver observer : mObservers) observer.onUrlUpdated(Tab.this);
             }
         }
 
         @Override
         public void visibleSSLStateChanged() {
             for (TabObserver observer : mObservers) observer.onSSLStateUpdated(Tab.this);
         }
 
         @Override
@@ skipping 2110 matching lines @@
     private native void nativeAttachToTabContentManager(long nativeTabAndroid,
             TabContentManager tabContentManager);
     private native void nativeAttachOverlayContentViewCore(long nativeTabAndroid,
             ContentViewCore content, boolean visible);
     private native void nativeDetachOverlayContentViewCore(long nativeTabAndroid,
             ContentViewCore content);
     private native boolean nativeHasPrerenderedUrl(long nativeTabAndroid, String url);
 
     private static native void nativeRecordStartupToCommitUma();
 }