Do not record startup metrics when non-browser UI was displayed

chrome/browser/ui/simple_message_box_internal.cc

Index: chrome/browser/ui/simple_message_box_internal.cc
diff --git a/media/base/video_capturer_source.cc b/chrome/browser/ui/simple_message_box_internal.cc
similarity index 52%
copy from media/base/video_capturer_source.cc
copy to chrome/browser/ui/simple_message_box_internal.cc
index c1ebbe1dbff339455a2ef2e9b09efc95edfe79c1..12444eb1f9e8114f0798265aa55992f44ce7f198 100644
--- a/media/base/video_capturer_source.cc
+++ b/chrome/browser/ui/simple_message_box_internal.cc
@@ -2,10 +2,10 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "media/base/video_capturer_source.h"
+#include "chrome/browser/ui/simple_message_box_internal.h"
 
-namespace media {
-
-VideoCapturerSource::~VideoCapturerSource() {}
-
-}  // namespace media
+namespace chrome {
+namespace internal {
+bool g_should_skip_message_box_for_test = false;
+}
+}