Add --enable-devtools-experiments to about:flags

chrome/app/generated_resources.grd

Index: chrome/app/generated_resources.grd
diff --git a/chrome/app/generated_resources.grd b/chrome/app/generated_resources.grd
index 32fef50c9f651c25cf767ed0cc4fe22329114fda..c332d899b2fdf9a35027125f66d4040bb344d374 100644
--- a/chrome/app/generated_resources.grd
+++ b/chrome/app/generated_resources.grd
@@ -5211,6 +5211,13 @@ Keep your key file in a safe place. You will need it to create new versions of y
       <message name="IDS_FLAGS_NTP_OTHER_SESSIONS_MENU_DESCRIPTION" desc="Description for the flag to disable the 'Other devices' menu on the NTP.">
         Disable the new tab page menu for accessing tabs on other devices.
       </message>
+
+      <message name="IDS_FLAGS_ENABLE_DEVTOOLS_EXPERIMENTS_NAME" desc="Name for the flag to enable experiments in Developer Tools">
+        Enable Developer Tools experiments.
+      </message>
+      <message name="IDS_FLAGS_ENABLE_DEVTOOLS_EXPERIMENTS_DESCRIPTION" desc="Description for the flag to enable experiments in Developer Tools.">
+        Enable Developer Tools experiments. Use Settings panel in Developer Tools to toggle individual experiments.
+      </message>
       <!-- Crashes -->
       <message name="IDS_CRASHES_TITLE" desc="Title for the chrome://crashes page.">
         Crashes