Improve the UI for handling profile lock contention.

chrome/app/google_chrome_strings.grd

Index: chrome/app/google_chrome_strings.grd
diff --git a/chrome/app/google_chrome_strings.grd b/chrome/app/google_chrome_strings.grd
index 3898018407827b0221a772be83681c3a5131684b..0090b0720397983d2d31ae86a83f04894b2de32d 100644
--- a/chrome/app/google_chrome_strings.grd
+++ b/chrome/app/google_chrome_strings.grd
@@ -975,6 +975,15 @@ Signing in anyway will merge Chrome information like bookmarks, history, and oth
       <message name="IDS_MEDIA_STREAM_STATUS_TRAY_TEXT_VIDEO_ONLY" desc="Tool tip for the capture status tray icon when camera is being used">
         Google Chrome 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 Google Chrome process (<ph name="PROCESS_ID">$1<ex>12345</ex></ph>) on another computer (<ph name="HOST_NAME">$2<ex>example.com</ex></ph>). (To protect against data corruption, Chrome locks profiles so that only one instance of Chrome can use the profile.) If you are sure no other processes are using this profile, click Unlock Profile and Relaunch. Otherwise, click Quit.
+      </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>