Use a two-part data format version in IndexedDB metadata.

third_party/WebKit/Source/web/AssertMatchingEnums.cpp

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 851 matching lines @@
 STATIC_ASSERT_ENUM(WebSettings::ProgressBarCompletion::LoadEvent,
                    ProgressBarCompletion::LoadEvent);
 STATIC_ASSERT_ENUM(WebSettings::ProgressBarCompletion::ResourcesBeforeDCL,
                    ProgressBarCompletion::ResourcesBeforeDCL);
 STATIC_ASSERT_ENUM(WebSettings::ProgressBarCompletion::DOMContentLoaded,
                    ProgressBarCompletion::DOMContentLoaded);
 STATIC_ASSERT_ENUM(
     WebSettings::ProgressBarCompletion::ResourcesBeforeDCLAndSameOriginIFrames,
     ProgressBarCompletion::ResourcesBeforeDCLAndSameOriginIFrames);
 
-// This ensures that the version number published in
-// WebSerializedScriptValueVersion.h matches the serializer's understanding.
-// TODO(jbroman): Fix this to also account for the V8-side version. See
-// https://crbug.com/704293.
-static_assert(kSerializedScriptValueVersion ==
-                  SerializedScriptValue::wireFormatVersion,
-              "Update WebSerializedScriptValueVersion.h.");
-
 }  // namespace blink