Add a "Keepalive count" column to Task Manager.

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 ea88d61f615ada6a6517e3d269121eec9ca00d58..4bc87b92c29da1348d935168d6a80ea2b9381452 100644
--- a/chrome/app/generated_resources.grd
+++ b/chrome/app/generated_resources.grd
@@ -3394,6 +3394,9 @@ From <ph name="DOWNLOAD_DOMAIN">$3<ex>example.com</ex></ph>
           <message name="IDS_TASK_MANAGER_MEMORY_STATE_COLUMN" desc="Task manager memory state column.  Shows the memory coordinator's state of a process">
             Memory state
           </message>
+          <message name="IDS_TASK_MANAGER_KEEPALIVE_COUNT_COLUMN" desc="Task manager keepalive count column.  Shows the keepalive count of background pages">
+            Keepalive count
+          </message>
         </if>
         <if expr="use_titlecase">
           <message name="IDS_TASK_MANAGER_KILL" desc="The caption of the Task Manager kill button">
@@ -3471,6 +3474,9 @@ From <ph name="DOWNLOAD_DOMAIN">$3<ex>example.com</ex></ph>
           <message name="IDS_TASK_MANAGER_MEMORY_STATE_COLUMN" desc="Task manager memory state column.  Shows the memory coordinator's state of a process">
             Memory State
           </message>
+          <message name="IDS_TASK_MANAGER_KEEPALIVE_COUNT_COLUMN" desc="Task manager keepalive count column.  Shows the keepalive count of background pages">

[ncarter (slow), 2017/01/31 19:56:45]

These should go into a little more depth since the keep-alive count is
crx-specific technical jargon; translation team members have filed bugs against
us before, if we aren't sufficiently specific in these descriptions.

Maybe:

Label for the "keep-alive count" column in the task manager. Relevant only for
chrome extension processes, this column shows a count of the activities that are
keeping the background page for a particular chrome extension alive."

[Wez, 2017/02/01 03:03:26]

Thanks - good catch. Have updated the wording for the two instances.

+            Keepalive Count
+          </message>
         </if>
         <message name="IDS_TASK_MANAGER_MEM_CELL_TEXT" desc="The value displayed in the memory usage cells.">
           <ph name="NUM_KILOBYTES">$1<ex>5,000</ex></ph>K