Adding client code for new desktop First Run Experience.

chrome/app/theme/chrome_unscaled_resources.grd

 <?xml version="1.0" encoding="UTF-8"?>
 <!-- This grd file contains images that are not pre-scaled for device
      scale factors. The image returned by
      |base::ResourceBundle::GetImageNamed| only contains 100P, and
      it is the caller's responsibility to do the right thing when the
      display is not at 100P device scale factor.
   -->
 <grit latest_public_release="0" current_release="1" output_all_resource_defines="false">
   <outputs>
     <output filename="grit/chrome_unscaled_resources.h" type="rc_header">
       <emit emit_type='prepend'></emit>
     </output>
     <output filename="chrome_unscaled_resources.pak" type="data_package" />
   </outputs>
   <release seq="1">
     <includes>
       <if expr="_google_chrome">
         <include name="IDR_PRODUCT_LOGO_64" file="google_chrome/product_logo_64.png" type="BINDATA" />
         <include name="IDR_PRODUCT_LOGO_128" file="google_chrome/product_logo_128.png" type="BINDATA" />
+        <include name="IDR_PRODUCT_LOGO_256" file="google_chrome/product_logo_256.png" type="BINDATA" />
         <!-- NOTE: product_logo_*.* files beyond what's listed above are
              referenced by installer code; don't remove them unless you know
              what you're doing! -->
         <if expr="is_macosx">
           <include name="IDR_STATUS_TRAY_ICON" file="google_chrome/product_logo_22_mono.png" type="BINDATA" />
         </if>
         <if expr="not is_macosx and not is_win">
           <include name="IDR_STATUS_TRAY_ICON" file="google_chrome/product_logo_22.png" type="BINDATA" />
         </if>
       </if>
       <if expr="not _google_chrome">
         <include name="IDR_PRODUCT_LOGO_64" file="chromium/product_logo_64.png" type="BINDATA" />
         <include name="IDR_PRODUCT_LOGO_128" file="chromium/product_logo_128.png" type="BINDATA" />
+        <include name="IDR_PRODUCT_LOGO_256" file="chromium/product_logo_256.png" type="BINDATA" />
         <!-- NOTE: product_logo_*.* files beyond what's listed above are
              referenced by installer code; don't remove them unless you know
              what you're doing! -->
         <if expr="is_macosx">
           <include name="IDR_STATUS_TRAY_ICON" file="chromium/product_logo_22_mono.png" type="BINDATA" />
         </if>
         <if expr="not is_macosx and not is_win">
           <include name="IDR_STATUS_TRAY_ICON" file="chromium/product_logo_22.png" type="BINDATA" />
         </if>
       </if>
@@ skipping 49 matching lines @@
       </if>
       <if expr="is_macosx">
         <include name="IDR_APPS_FOLDER_16" file="mac/apps_folder_16.png" type="BINDATA" />
         <include name="IDR_APPS_FOLDER_32" file="mac/apps_folder_32.png" type="BINDATA" />
         <include name="IDR_APPS_FOLDER_OVERLAY_128" file="mac/apps_folder_overlay_128.png" type="BINDATA" />
         <include name="IDR_APPS_FOLDER_OVERLAY_512" file="mac/apps_folder_overlay_512.png" type="BINDATA" />
       </if>
     </includes>
   </release>
 </grit>