[SH] Add flag for Shared Highlighting Manager

Bug: 1330591
Change-Id: Iec849ffd443e0bb155e049d9bf624a920135a6a7
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3680398
Reviewed-by: Sebastien Seguin-Gagnon <[email protected]>
Commit-Queue: Cheick Cisse <[email protected]>
Reviewed-by: Jeffrey Cohen <[email protected]>
Cr-Commit-Position: refs/heads/main@{#1010636}
diff --git a/chrome/browser/flag_descriptions.cc b/chrome/browser/flag_descriptions.cc
index 2e0773f..b172e57 100644
--- a/chrome/browser/flag_descriptions.cc
+++ b/chrome/browser/flag_descriptions.cc
@@ -2942,6 +2942,10 @@
 const char kSharedHighlightingAmpDescription[] =
     "Enables Shared Highlighting for AMP Viwers.";
 
+const char kSharedHighlightingManagerName[] = "Refactoring Shared Highlighting";
+const char kSharedHighlightingManagerDescription[] =
+    "Refactors Shared Highlighting by centralizing the IPC calls in a Manager.";
+
 const char kSharedHighlightingRefinedBlocklistName[] =
     "Shared Highlighting Blocklist Refinement";
 const char kSharedHighlightingRefinedBlocklistDescription[] =