Improve the UI for handling profile lock contention.

chrome/app/chromium_strings.grd

Index: chrome/app/chromium_strings.grd
diff --git a/chrome/app/chromium_strings.grd b/chrome/app/chromium_strings.grd
index e07ccaa00830b4c03525265031feb9fc9c057770..4aafdadb688428d1623db313dd513bb72b4ac379 100644
--- a/chrome/app/chromium_strings.grd
+++ b/chrome/app/chromium_strings.grd
@@ -1051,6 +1051,15 @@ Signing in anyway will merge Chromium information like bookmarks, history, and o
       <message name="IDS_MEDIA_STREAM_STATUS_TRAY_TEXT_VIDEO_ONLY" desc="Tool tip for the capture status tray icon when camera is being used">
         Chromium is using your camera.
       </message>
+
+      <!-- ProcessSingleton -->
+      <message name="IDS_PROFILE_IN_USE_LINUX" desc="Message shown when the browser cannot start because the profile is in use on a different host.">
+        The profile appears to be in use by another Chromium process (<ph name="PROCESS_ID">$1<ex>12345</ex></ph>) on another computer (<ph name="HOST_NAME">$2<ex>example.com</ex></ph>). Chromium has locked the profile so that it doesn't get corrupted. If you are sure no other processes are using this profile, you can unlock the profile and relaunch Chromium.
+      </message>
+      <message name="IDS_PROFILE_IN_USE_LINUX_RELAUNCH" desc="Text of button in dialog to delete the profile lock file.">
+        Unlock Profile and Relaunch
+      </message>
+
     </messages>
   </release>
 </grit>