[Android WebView] Synthesize a fake page loading event on page source modification

content/content.gyp

Index: content/content.gyp
diff --git a/content/content.gyp b/content/content.gyp
index 7bc40bfbc37e795809d9673d135d7542dcca910a..01bd90a93ed67ae3afb890033f8d5d8c67ea74bb 100644
--- a/content/content.gyp
+++ b/content/content.gyp
@@ -443,6 +443,7 @@
             'content_strings_grd',
             'content_gamepad_mapping',
             'gesture_event_type_java',
+            'invalidate_types_java',
             'navigation_controller_java',
             'popup_item_type_java',
             'result_codes_java',
@@ -495,6 +496,14 @@
           'includes': [ '../build/android/java_cpp_enum.gypi' ],
         },
         {
+          'target_name': 'invalidate_types_java',
+          'type': 'none',
+          'variables': {
+            'source_file': 'public/browser/invalidate_type.h',
+          },
+          'includes': [ '../build/android/java_cpp_enum.gypi' ],
+        },
+        {
           'target_name': 'navigation_controller_java',
           'type': 'none',
           'variables': {