ClearBrowsingData: Add new flag for installed apps warning.

The installed apps warning out of the storage pressure UI project,
so this CL puts the change behind a separate flag so that it can
be launched independent of all the other storage pressure UI changes.

Change-Id: Ibafa02d76e51e54f99e162bc24c69590f1aab916
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2138636
Reviewed-by: Avi Drissman <[email protected]>
Reviewed-by: Brian White <[email protected]>
Commit-Queue: Jarryd Goodman <[email protected]>
Cr-Commit-Position: refs/heads/master@{#757897}
diff --git a/chrome/browser/flag_descriptions.h b/chrome/browser/flag_descriptions.h
index dff2339..b6669c3 100644
--- a/chrome/browser/flag_descriptions.h
+++ b/chrome/browser/flag_descriptions.h
@@ -654,6 +654,9 @@
 extern const char kInProductHelpDemoModeChoiceName[];
 extern const char kInProductHelpDemoModeChoiceDescription[];
 
+extern const char kInstalledAppsInCbdName[];
+extern const char kInstalledAppsInCbdDescription[];
+
 extern const char kJavascriptHarmonyName[];
 extern const char kJavascriptHarmonyDescription[];