Turn off groups in task manager, as we're rolling out that functionality in

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 e6237af033f6689d64c622f1cd9471cbb3608f88..07ad7ede686bc28b6be6d96814edb383a1a6ece7 100644
--- a/chrome/app/generated_resources.grd
+++ b/chrome/app/generated_resources.grd
@@ -3513,12 +3513,6 @@ each locale. -->
       <message name="IDS_TASK_MANAGER_WEB_BROWSER_CELL_TEXT" desc="The text of the web browser process row">
         Browser
       </message>
-      <message name="IDS_TASK_MANAGER_BACKGROUND_SEPARATOR" desc="The heading for the background pages grouping in the task manager">
-        Background Apps and Extensions
-      </message>
-      <message name="IDS_TASK_MANAGER_FOREGROUND_SEPARATOR" desc="The heading for the foreground pages grouping in the task manager">
-        Browser Tabs and Plugins
-      </message>
       <message name="IDS_TASK_MANAGER_EXTENSION_PREFIX" desc="The prefix for a Task Manager extension row (always visible if the extension has a view)">
         Extension: <ph name="EXTENSION_NAME">$1<ex>Sample Extension</ex></ph>
       </message>