Add flag to force continue section to show

This CL creates a feature flag in order to show the continue section in
the launcher for debugging purposes.

The code adds 3 fake files suggestions to the zero_state_file_provider.
These suggestions are given lower scores so that they could be
overridden by higher real file suggestions.

Bug: 1216084
Change-Id: If14731e105af25c931a56921982b386808e7c490
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3207245
Reviewed-by: Xiyuan Xia <[email protected]>
Reviewed-by: Tony Yeoman <[email protected]>
Commit-Queue: Ana Salazar <[email protected]>
Cr-Commit-Position: refs/heads/main@{#928858}
diff --git a/chrome/browser/flag_descriptions.cc b/chrome/browser/flag_descriptions.cc
index 00ba302..a12648e 100644
--- a/chrome/browser/flag_descriptions.cc
+++ b/chrome/browser/flag_descriptions.cc
@@ -4890,6 +4890,12 @@
     "To evaluate an enhanced Launcher experience that aims to improve app "
     "workflows by optimizing access to apps, app content, and app actions.";
 
+const char kForceShowContinueSectionName[] =
+    "App Launcher: Force Continue Section Suggestions";
+const char kForceShowContinueSectionDescription[] =
+    "Forces the continue section of the app launcher to show. If there are no "
+    "file suggestions available, the suggestions will be faked.";
+
 const char kReduceDisplayNotificationsName[] = "Reduce display notifications";
 const char kReduceDisplayNotificationsDescription[] =
     "If enabled, notifications for display rotation, display removed, display "