Add strings for ARC's intent picker incognito mode

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 3aa98a2f8fdfcdf8b0b91a4ec09bfd71b0f35e8e..535f8fa0dac499508284a6d7a14b2976cc1f87cf 100644
--- a/chrome/app/generated_resources.grd
+++ b/chrome/app/generated_resources.grd
@@ -14752,6 +14752,18 @@ Please check your email at <ph name="ACCOUNT_EMAIL">$2<ex>jane.doe@gmail.com</ex
         <message name="IDS_INTENT_PICKER_BUBBLE_VIEW_OPEN_WITH" desc="Message contained in a label used as a header for a list of applications from which the user will pick one.">
           Open with
         </message>
+        <message name="IDS_INTENT_PICKER_INCOGNITO_WARNING_OK" desc="Message displayed to the user so he can Accept to procced.">
+          OK
+        </message>
+        <message name="IDS_INTENT_PICKER_INCOGNITO_WARNING_CANCEL" desc="Message displayed to the user, used to Cancel the on-going URL redirection">
+          CANCEL
+        </message>
+        <message name="IDS_INTENT_PICKER_INCOGNITO_WARNING_TITLE" desc="Tittle for the warning message, it litteraly warns the user about the URL redirecting to an external app outside of the incognito environment.">
+          Warning
+        </message>
+        <message name="IDS_INTENT_PICKER_INCOGNITO_WARNING_MESSAGE" desc="Message explaining the user that by continuing he/she will leave the incognito environment.">
+          Leaving incognito mode if this link is opened in an external application. Continue?
+        </message>
       </if>
 
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