Change the "close Chrome with downloads in progress" dialog to resemble kenmoore's mock

chrome/app/chromium_strings.grd

 <?xml version="1.0" encoding="UTF-8"?>
 <!-- This file contains definitions of strings that are distribution specific.
 These strings will not be translated and only english versions will
 be available for now. -->
 
 <grit base_dir="." latest_public_release="0" current_release="1"
       source_lang_id="en" enc_check="möl">
   <outputs>
     <output filename="grit/chromium_strings.h" type="rc_header">
       <emit emit_type='prepend'></emit>
@@ skipping 575 matching lines @@
         Chromium does not include the PDF viewer which is required for Print Preview to function.
       </message>
 
       <!-- Download Shelf Items -->
       <message name="IDS_DOWNLOAD_STATUS_CRX_INSTALL_RUNNING"
                desc="Message shown when a CRX has been downloaded and is being unpacked.">
         Adding to Chromium...
       </message>
 
       <!-- Remove in-progress downloads confirmation dialog -->
-      <message name="IDS_SINGLE_DOWNLOAD_REMOVE_CONFIRM_WARNING" desc="Title of the dialog asking for user confirmation to close the browser when one download is in-progress.">
-        Do you want to exit Chromium with a download in progress?
+      <message name="IDS_SINGLE_DOWNLOAD_REMOVE_CONFIRM_EXPLANATION" desc="Explanation of the dialog asking for user confirmation to close the browser when one download is in progress.">
+        A download is currently in progress. Do you want to exit Chromium and cancel the download?
       </message>
-      <message name="IDS_MULTIPLE_DOWNLOADS_REMOVE_CONFIRM_WARNING" desc="Title of the dialog asking for user confirmation to close the browser when multiple downloads are in-progress.">
-        Do you want to exit Chromium with <ph name="DOWNLOAD_COUNT">$1<ex>3</ex></ph> downloads in progress?
+      <message name="IDS_MULTIPLE_DOWNLOADS_REMOVE_CONFIRM_EXPLANATION" desc="Explanation of the dialog asking for user confirmation to close the browser when multiple downloads are in progress.">
+        Downloads are currently in progress. Do you want to exit Chromium and cancel the downloads?
       </message>
-      <message name="IDS_SINGLE_DOWNLOAD_REMOVE_CONFIRM_EXPLANATION" desc="Explanation of the dialog asking for user confirmation to close the browser when one download is in-progress.">
-        If you close Chromium now, this download will be canceled.
-      </message>
-      <message name="IDS_MULTIPLE_DOWNLOADS_REMOVE_CONFIRM_EXPLANATION" desc="Explanation of the dialog asking for user confirmation to close the browser when multiple downloads are in-progress.">
-        If you close Chromium now, these downloads will be canceled.
+      <message name="IDS_DOWNLOAD_REMOVE_CONFIRM_OK_BUTTON_LABEL" desc="Button text for OKing to close the browser when one or more downloads are in progress.">
+        Yes, exit Chromium
       </message>
 
       <!-- "Create application shortcuts" dialog -->
       <if expr="is_posix and not is_macosx">
         <message name="IDS_CREATE_SHORTCUTS_ERROR_LABEL" desc="Contents of the main label in the error dialog box when creating an application shortcut failed.">
           Chromium cannot create an application shortcut because it cannot determine the current desktop environment.
         </message>
       </if>
 
       <!-- Autolaunch infobar -->
@@ skipping 166 matching lines @@
         Chromium Autofill settings
       </message>
 
       <!-- Web Intents -->
       <message name="IDS_INTENT_PICKER_INSTALL_EXTENSION" desc="Text on the button in the web intent picker that installs an extension then uses the extension as an intent service.">
         Add to Chromium
       </message>
     </messages>
   </release>
 </grit>