Add about flags for Isolated Prerender

Description kept intentionally vauge.

Bug: 1023485
Change-Id: I24162e40bc0108cd30a38bb7fdc3bfe49c8cbb8e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2118399
Commit-Queue: Robert Ogden <[email protected]>
Reviewed-by: Ryan Sturm <[email protected]>
Cr-Commit-Position: refs/heads/master@{#753023}
diff --git a/chrome/browser/flag_descriptions.cc b/chrome/browser/flag_descriptions.cc
index 8342320..82d6bd7 100644
--- a/chrome/browser/flag_descriptions.cc
+++ b/chrome/browser/flag_descriptions.cc
@@ -639,6 +639,11 @@
 const char kEnablePreviewsCoinFlipDescription[] =
     "Enable coin flip experimentation of Previews.";
 
+const char kEnableSRPIsolatedPrerendersName[] =
+    "Enable Navigation Predictor Isolated Prerenders";
+const char kEnableSRPIsolatedPrerendersDescription[] =
+    "Enable Navigation Predictions on the Google SRP to be fully isolated.";
+
 const char kDownloadAutoResumptionNativeName[] =
     "Enable download auto-resumption in native";
 const char kDownloadAutoResumptionNativeDescription[] =