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

components/web_contents_delegate_android/android/java/src/org/chromium/components/web_contents_delegate_android/WebContentsDelegateAndroid.java

 // Copyright 2012 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.components.web_contents_delegate_android;
 
 import android.view.KeyEvent;
 
 import org.chromium.base.CalledByNative;
 import org.chromium.base.JNINamespace;
+import org.chromium.content_public.browser.InvalidateTypes;
 import org.chromium.content_public.browser.WebContents;
 
 /**
  * Java peer of the native class of the same name.
  */
 @JNINamespace("web_contents_delegate_android")
 public class WebContentsDelegateAndroid {
 
     // Equivalent of WebCore::WebConsoleMessage::LevelTip.
     public static final int LOG_LEVEL_TIP = 0;
     // Equivalent of WebCore::WebConsoleMessage::LevelLog.
     public static final int LOG_LEVEL_LOG = 1;
     // Equivalent of WebCore::WebConsoleMessage::LevelWarning.
     public static final int LOG_LEVEL_WARNING = 2;
     // Equivalent of WebCore::WebConsoleMessage::LevelError.
     public static final int LOG_LEVEL_ERROR = 3;
 
-    // Flags passed to the WebContentsDelegateAndroid.navigationStateChanged to tell it
-    // what has changed. Should match the values in invalidate_type.h.
-    // Equivalent of InvalidateTypes::INVALIDATE_TYPE_URL.
-    public static final int INVALIDATE_TYPE_URL = 1 << 0;
-    // Equivalent of InvalidateTypes::INVALIDATE_TYPE_TAB.
-    public static final int INVALIDATE_TYPE_TAB = 1 << 1;
-    // Equivalent of InvalidateTypes::INVALIDATE_TYPE_LOAD.
-    public static final int INVALIDATE_TYPE_LOAD = 1 << 2;
-    // Equivalent of InvalidateTypes::INVALIDATE_TYPE_TITLE.
-    public static final int INVALIDATE_TYPE_TITLE = 1 << 3;
+    // TODO(mnaganov): Remove after getting rid of downstream usages.
+    public static final int INVALIDATE_TYPE_TAB = InvalidateTypes.TAB;
 
     // The most recent load progress callback received from WebContents, as a percentage.
     // Initialize to 100 to indicate that we're not in a loading state.
     private int mMostRecentProgress = 100;
 
     public int getMostRecentProgress() {
         return mMostRecentProgress;
     }
 
     /**
@@ skipping 114 matching lines @@
 
     @CalledByNative
     public void toggleFullscreenModeForTab(boolean enterFullscreen) {
     }
 
     @CalledByNative
     public boolean isFullscreenForTabOrPending() {
         return false;
     }
 }