arc-app-launcher: Minimal support for ARC app launcher.

ui/app_list/resources/app_list_resources.grd

 <?xml version="1.0" encoding="UTF-8"?>
 <grit latest_public_release="0" current_release="1">
   <outputs>
     <output filename="grit/app_list_resources.h" type="rc_header" context="default_100_percent">
       <emit emit_type='prepend'></emit>
     </output>
     <output filename="grit/app_list_resources_map.cc" type="resource_map_source" context="default_100_percent" />
     <output filename="grit/app_list_resources_map.h" type="resource_map_header" context="default_100_percent" />
     <output filename="app_list_resources_100_percent.pak" type="data_package" context="default_100_percent" />
     <output filename="app_list_resources_200_percent.pak" type="data_package" context="default_200_percent" />
     <output filename="app_list_resources_300_percent.pak" type="data_package" context="default_300_percent" />
   </outputs>
   <release seq="1">
     <structures fallback_to_low_resolution="true">
       <!-- KEEP THESE IN ALPHABETICAL ORDER!  DO NOT ADD TO RANDOM PLACES JUST
            BECAUSE YOUR RESOURCES ARE FUNCTIONALLY RELATED OR FALL UNDER THE
            SAME CONDITIONALS. -->
+      <structure type="chrome_scaled_image" name="IDR_APP_LIST_ARC_APP_DEFAULT" file="common/app_list_arc_app_default.png" />

[elijahtaylor1, 2015/10/28 06:32:39]

I can't comment on the binary files, but are we clear to add these to the chrome
tree?  are they license free and is it ok branding-wise?  Please check with
bengold (CC'd) on branding

[khmel1, 2015/10/29 08:12:18]

Ok, Removed as bengold requested.

       <structure type="chrome_scaled_image" name="IDR_APP_LIST_ITEM_PROGRESS_BACKGROUND" file="common/app_list_progress_bar_background.png" />
       <structure type="chrome_scaled_image" name="IDR_APP_LIST_ITEM_PROGRESS_LEFT" file="common/app_list_progress_bar_left.png" />
       <structure type="chrome_scaled_image" name="IDR_APP_LIST_ITEM_PROGRESS_CENTER" file="common/app_list_progress_bar_center.png" />
       <structure type="chrome_scaled_image" name="IDR_APP_LIST_ITEM_PROGRESS_RIGHT" file="common/app_list_progress_bar_right.png" />
       <structure type="chrome_scaled_image" name="IDR_APP_LIST_TOOLS_HOVER" file="common/app_list_tools_hover.png" />
       <structure type="chrome_scaled_image" name="IDR_APP_LIST_TOOLS_NORMAL" file="common/app_list_tools_normal.png" />
       <structure type="chrome_scaled_image" name="IDR_APP_LIST_TOOLS_PRESSED" file="common/app_list_tools_pressed.png" />
       <structure type="chrome_scaled_image" name="IDR_APP_LIST_FOLDER_BACK_NORMAL" file="common/app_list_folder_back_normal.png" />
       <structure type="chrome_scaled_image" name="IDR_APP_LIST_SPEECH_MIC_ON" file="common/app_list_mic_on.png" />
       <structure type="chrome_scaled_image" name="IDR_APP_LIST_SPEECH_MIC_OFF" file="common/app_list_mic_off.png" />
       <structure type="chrome_scaled_image" name="IDR_APP_LIST_SPEECH_MIC_RECORDING" file="common/app_list_mic_recording.png" />
       <if expr="is_win or desktop_linux">
         <structure type="chrome_scaled_image" name="IDR_APP_LIST_USER_INDICATOR" file="common/app_list_user_indicator.png" />
       </if>
     </structures>
   </release>
 </grit>