desks: Add flag to expose enhanced desk animations.

Test: none
Bug: 1111445
Change-Id: I8ee9546149c0c052677f897efedd7f950cd95c70
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2417370
Reviewed-by: Min Chen <[email protected]>
Commit-Queue: Sammie Quon <[email protected]>
Cr-Commit-Position: refs/heads/master@{#809542}
diff --git a/chrome/browser/flag_descriptions.h b/chrome/browser/flag_descriptions.h
index c1d5e4c..674812ed 100644
--- a/chrome/browser/flag_descriptions.h
+++ b/chrome/browser/flag_descriptions.h
@@ -2305,6 +2305,9 @@
 extern const char kEnableSuggestedFilesName[];
 extern const char kEnableSuggestedFilesDescription[];
 
+extern const char kEnhancedDeskAnimationsName[];
+extern const char kEnhancedDeskAnimationsDescription[];
+
 extern const char kEnterpriseReportingInChromeOSName[];
 extern const char kEnterpriseReportingInChromeOSDescription[];