Improve the UI for handling profile lock contention.

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 0f8819713f7bafe19b26099091355ccaefb8f139..445336a6bd613852fe4c2a22131e877bbc3629c0 100644
--- a/chrome/app/generated_resources.grd
+++ b/chrome/app/generated_resources.grd
@@ -13734,7 +13734,10 @@ Some features may be unavailable.  Please check that the profile exists and you
 
     <!-- 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 process <ph name="PROCESS_ID">$1<ex>12345</ex></ph> on host <ph name="HOST_NAME">$2<ex>example.com</ex></ph>.  If you are sure no other processes are using this profile, delete the file <ph name="LOCK_FILE">$3<ex>/home/user/.config/google-chrome/SingletonLock</ex></ph> and relaunch <ph name="PRODUCT_NAME">$4<ex>Google Chrome</ex></ph>.
+      The profile appears to be in use by another <ph name="PRODUCT_NAME">$3<ex>Google Chrome</ex></ph> 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, <ph name="PRODUCT_NAME">$3<ex>Google Chrome</ex></ph> locks profiles so that only one instance of <ph name="PRODUCT_NAME">$3<ex>Google Chrome</ex></ph> can use the profile.) If you are sure no other processes are using this profile, click Unlock Profile and Relaunch. Otherwise, click Quit.

[Nico, 2013/09/04 15:58:04]

This won't localize well. Put this into the chromium / chrome grd files. See
comment 0 in https://code.google.com/p/chromium/issues/detail?id=111425

+    </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>
 
     <!-- Update Recommended dialog -->