[scheduler] Throttle background frames with 1% CPU limit

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 1a604c71edbf64058a7328079cac1091306d01a9..1d41162dfe33473ca61416ebb3b4caaae7bc0974 100644
--- a/chrome/app/generated_resources.grd
+++ b/chrome/app/generated_resources.grd
@@ -15520,6 +15520,14 @@ read aloud to screenreader users to announce that a completion is available.">
     <message name="IDS_MEDIA_REMOTING_EXIT_FULL_SCREEN_BUTTON" desc="A button on a full screened tab, which, on click, will exit full screen mode.">
       Exit Full Screen
     </message>
+
+    <!-- Expensive background timer throttling flag -->
+    <message name="IDS_FLAGS_EXPENSIVE_BACKGROUND_TIMER_THROTTLING_NAME">

[jochen (gone - plz use gerrit), 2016/09/30 10:58:03]

please add a desc="" describing what this message is used for (and below)

[altimin, 2016/09/30 11:37:36]

Done.

+      Throttle expensive background timers
+    </message>
+    <message name="IDS_FLAGS_EXPENSIVE_BACKGROUND_TIMER_THROTTLING_DESCRIPTION">
+      Enables intervention to limit CPU usage of background timers to 1%.
+    </message>
   </messages>
  </release>
 </grit>