Don't put the app name in the Task Manager window title for CrOS

For CrOS, since the Task Manager is showing tasks for all of CrOS
and not just “Chromium”, it's not appropriate to label it as such.

Bug: 1109438
Change-Id: Iba02159483b124601a90123b0eed4a215f7851a1
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2354415Reviewed-by: Daniele Castagna <dcastagna@chromium.org>
Commit-Queue: Avi Drissman <avi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#797964}

chrome/app/chromium_strings.grd

@@ -216,12 +216,12 @@ If you update this file, be sure also to update google_chrome_strings.grd. -->
           New window
         </message>
       </if>
-      <if expr="is_macosx">
+      <if expr="is_macosx or chromeos">
         <message name="IDS_TASK_MANAGER_TITLE" desc="The title of the Task Manager window">
           Task Manager
         </message>
       </if>
-      <if expr="not is_macosx">
+      <if expr="not is_macosx and not chromeos">
         <message name="IDS_TASK_MANAGER_TITLE" desc="The title of the Task Manager window">
           Task Manager - Chromium
         </message>

chrome/app/google_chrome_strings.grd

@@ -222,12 +222,12 @@ chromium_strings.grd. -->
           New window
         </message>
       </if>
-      <if expr="is_macosx">
+      <if expr="is_macosx or chromeos">
         <message name="IDS_TASK_MANAGER_TITLE" desc="The title of the Task Manager window">
           Task Manager
         </message>
       </if>
-      <if expr="not is_macosx">
+      <if expr="not is_macosx and not chromeos">
         <message name="IDS_TASK_MANAGER_TITLE" desc="The title of the Task Manager window">
           Task Manager - Google Chrome
         </message>