Fix the build metadata definition in the GN build.

build/config/BUILD.gn

 # Copyright (c) 2013 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.
 
 import("//build/config/allocator.gni")
 import("//build/config/chrome_build.gni")
 import("//build/config/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//build/module_args/v8.gni")
 
 declare_args() {
   # When set, turns off the (normally-on) iterator debugging and related stuff
   # that is normally turned on for Debug builds. These are generally useful for
   # catching bugs but in some cases may cause conflicts or excessive slowness.
   disable_iterator_debugging = false
 
   # Set to true to not store any build metadata, e.g. ifdef out all __DATE__
   # and __TIME__. Set to 0 to reenable the use of these macros in the code
   # base. See http://crbug.com/314403.
   #
   # Continue to embed build meta data in Official builds, basically the
   # time it was built.
   # TODO(maruel): This decision should be revisited because having an
   # official deterministic build has high value too but MSVC toolset can't
   # generate anything deterministic with WPO enabled AFAIK.
-  dont_embed_build_metadata = is_official_build
+  dont_embed_build_metadata = !is_official_build
 
   # Set to true to enable dcheck in Release builds.
   dcheck_always_on = false
 
   # Set to true to compile with the OpenGL ES 2.0 conformance tests.
   internal_gles2_conform_tests = false
 }
 
 # TODO(brettw) Most of these should be removed. Instead of global feature
 # flags, we should have more modular flags that apply only to a target and its
@@ skipping 301 matching lines @@
       "CoreFoundation.framework",
       "CoreGraphics.framework",
       "CoreText.framework",
       "Foundation.framework",
       "UIKit.framework",
     ]
   } else if (is_linux) {
     libs = [ "dl" ]
   }
 }