Change dialog texts for folder upload to explicitly indicate it's for 'Uploading'

ui/base/strings/ui_strings.grd

 <?xml version="1.0" encoding="UTF-8"?>
 
 <!-- This file contains definitions of resources that will be translated for
 each locale. Specifically, these are UI strings that are used by app/ that
 need to be translated for each locale.-->
 
 <grit base_dir="." latest_public_release="0" current_release="1"
       source_lang_id="en" enc_check="möl">
   <outputs>
     <!-- TODO add each of your output files.  Modify the three below, and add
@@ skipping 203 matching lines @@
       <!-- General application strings -->
       <message name="IDS_APP_UNTITLED_SHORTCUT_FILE_NAME" desc="The name of the Internet Shortcut file created for URLs dragged that have no title">
         Untitled Webpage
       </message>
       <message name="IDS_APP_SAVEAS_ALL_FILES" desc="Save As dialog box default text">
         All Files
       </message>
       <message name="IDS_APP_SAVEAS_EXTENSION_FORMAT" desc="Save As dialog box extension format text">
         <ph name="SAVEAS_EXTENSION_TYPE">$1<ex>EXE</ex></ph> File (.<ph name="SAVEAS_EXTENSION_NAME">$2<ex>exe</ex></ph>)
       </message>
+      <message name="IDS_SELECT_UPLOAD_FOLDER_DIALOG_TITLE" desc="The default title for the Select Upload Folder dialog.">
+        Select Folder to Upload
+      </message>
 
       <if expr="is_macosx">
         <message name="IDS_SELECT_FOLDER_BUTTON_TITLE" desc="The name of the Select button in the folder selection dialog.">
           Select
         </message>
+        <message name="IDS_SELECT_UPLOAD_FOLDER_BUTTON_TITLE" desc="The name of the Select button in the folder selection dialog for uploading.">
+          Upload
+        </message>
       </if>
 
       <!-- File chooser dialog default titles (only used on Linux) -->
       <message name="IDS_SELECT_FOLDER_DIALOG_TITLE" desc="The default title for the Select Folder file chooser dialog.">
         Select Folder
       </message>
       <message name="IDS_SAVE_AS_DIALOG_TITLE" desc="The default title for the Save As file chooser dialog.">
         Save File
       </message>
       <message name="IDS_OPEN_FILE_DIALOG_TITLE" desc="The default title for the Open File file chooser dialog (single file).">
         Open File
       </message>
       <message name="IDS_OPEN_FILES_DIALOG_TITLE" desc="The default title for the Open File file chooser dialog (multiple files).">
         Open Files
       </message>
       <message name="IDS_SAVEAS_ALL_FILES" desc="Save As dialog box default text">
         All Files
       </message>
+      <message name="IDS_SELECT_UPLOAD_FOLDER_DIALOG_UPLOAD_BUTTON" desc="Button label text for Upload Folder dialog">
+        Upload
+      </message>
 
       <!--Accessible name/action strings-->
       <message name="IDS_APP_ACCACTION_PRESS" desc="The accessible default action for a button.">
         Press
       </message>
       <message name="IDS_APP_ACCNAME_CLOSE" desc="The accessible name for the Close button.">
         Close
       </message>
       <message name="IDS_APP_ACCNAME_MINIMIZE" desc="The accessible name for the Minimize button.">
         Minimize
@@ skipping 254 matching lines @@
       </message>
       <message name="IDS_APP_LIST_OPEN_SETTINGS" desc="The menu entry to show the settings UI.">
         Settings
       </message>
       <message name="IDS_APP_LIST_OPEN_FEEDBACK" desc="The menu entry to show the feedback UI.">
         Send feedback
       </message>
     </messages>
   </release>
 </grit>