Added proper extensions for hosted documents.

chrome/app/generated_resources.grd

 <?xml version="1.0" encoding="UTF-8"?>
 
 <!--
 This file contains definitions of resources that will be translated for each
 locale.  The variables is_win, is_macosx, is_linux, and is_posix are available
 for making strings OS specific.  Other platform defines such as use_titlecase
 are declared in build/common.gypi.
 -->
 
 <grit base_dir="." latest_public_release="0" current_release="1"
@@ skipping 10262 matching lines @@
       <message name="IDS_FILE_BROWSER_WORD_DOCUMENT_FILE_TYPE" desc="Word document file type">
         Word document
       </message>
       <message name="IDS_FILE_BROWSER_POWERPOINT_PRESENTATION_FILE_TYPE" desc="PowerPoint presentation file type">
         PowerPoint presentation
       </message>
       <message name="IDS_FILE_BROWSER_EXCEL_FILE_TYPE" desc="Excel spreadsheet file type">
         Excel spreadsheet
       </message>
 
+      <message name="IDS_FILE_BROWSER_GDOC_DOCUMENT_FILE_TYPE" desc="Google document file type">
+        Google document
+      </message>
+      <message name="IDS_FILE_BROWSER_GSHEET_DOCUMENT_FILE_TYPE" desc="Google spreadsheet file type">
+        Google spreadsheet
+      </message>
+      <message name="IDS_FILE_BROWSER_GSLIDES_DOCUMENT_FILE_TYPE" desc="Google presentation file type">
+        Google presentation
+      </message>
+      <message name="IDS_FILE_BROWSER_GDRAW_DOCUMENT_FILE_TYPE" desc="Google drawing file type">
+        Google drawing
+      </message>
+      <message name="IDS_FILE_BROWSER_GTABLE_DOCUMENT_FILE_TYPE" desc="Google table file type">
+        Google table
+      </message>
+
       <message name="IDS_FILE_BROWSER_ENQUEUE" desc="Enqueue file menu item used for media playback">
         Enqueue
       </message>
       <message name="IDS_FILE_BROWSER_ERROR_VIEWING_FILE_TITLE" desc="Title of error message propmt when user attempts to open a non-supported file in file browser.">
         <ph name="FILENAME">$1</ph>
       </message>
       <message name="IDS_FILE_BROWSER_ERROR_VIEWING_FILE" desc="Error message when user attempts to open a non-supported file in file browser.">
         To view this file, convert it to a format that's viewable on the web. For example, you can upload it to Google Docs.
       </message>
       <message name="IDS_FILE_BROWSER_ERROR_UNKNOWN_FILE_TYPE" desc="Error message when user attempts to open a file of unknown type in file browser.">
@@ skipping 4856 matching lines @@
     </messages>
     <structures fallback_to_english="true">
       <!-- Make sure these stay in sync with the structures in generated_resources.grd. -->
       <structure name="IDD_CHROME_FRAME_FIND_DIALOG" file="cf_resources.rc" type="dialog" >
       </structure>
       <structure name="IDD_CHROME_FRAME_READY_PROMPT" file="cf_resources.rc" type="dialog" >
       </structure>
     </structures>
   </release>
 </grit>