Add enable-embedded-shared-worker in chrome://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 341501a6dae1380fadd9f159d5e42a3a8d7a141a..92605044a0712c3671afd1fc1632f4bd59dd23ab 100644
--- a/chrome/app/generated_resources.grd
+++ b/chrome/app/generated_resources.grd
@@ -7019,6 +7019,12 @@ Keep your key file in a safe place. You will need it to create new versions of y
       <message name="IDS_FLAGS_ENABLE_EASY_UNLOCK_DESCRIPTION" desc="Description for flag to Enable Easy Unlock.">
         Easy Unlock allows you to unlock your Chromebook when in proximity to your phone.
       </message>
+      <message name="IDS_FLAGS_ENABLE_EMBEDDED_SHARED_WORKER_NAME" desc="Name for In-renderer Shared Worker.">
+        In-renderer Shared Worker.
+      </message>
+      <message name="IDS_FLAGS_ENABLE_EMBEDDED_SHARED_WORKER_DESCRIPTION" desc="Description for flag to In-renderer Shared Worker.">
+        Run Shared Worker in a renderer process.
+      </message>
 
       <!-- Crashes -->
       <message name="IDS_CRASHES_TITLE" desc="Title for the chrome://crashes page.">