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

content/public/browser/invalidate_type.h

 // Copyright (c) 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.
 
 #ifndef CONTENT_PUBLIC_BROWSER_INVALIDATE_TYPE_H_
 #define CONTENT_PUBLIC_BROWSER_INVALIDATE_TYPE_H_
 
 namespace content {
 
 // Flags passed to the WebContentsDelegate.NavigationStateChanged to tell it
 // what has changed. Combine them to update more than one thing.
+//
+// A Java counterpart will be generated for this enum.
+// GENERATED_JAVA_ENUM_PACKAGE: (
+//   org.chromium.content_public.browser)
+// GENERATED_JAVA_PREFIX_TO_STRIP: INVALIDATE_TYPE_
 enum InvalidateTypes {
   INVALIDATE_TYPE_URL           = 1 << 0,  // The URL has changed.
   INVALIDATE_TYPE_TAB           = 1 << 1,  // The favicon, app icon, or crashed
                                            // state changed.
   INVALIDATE_TYPE_LOAD          = 1 << 2,  // The loading state has changed.
   INVALIDATE_TYPE_TITLE         = 1 << 3,  // The title changed.
 
   INVALIDATE_TYPE_ALL           = (1 << 4) - 1,
 };
 
 }
 
 #endif  // CONTENT_PUBLIC_BROWSER_INVALIDATE_TYPE_H_