Extract common OOBE controller code from oobe.js/login.js.

chrome/browser/browser_resources.grd

 <?xml version="1.0" encoding="UTF-8"?>
 <grit latest_public_release="0" current_release="1">
   <outputs>
     <output filename="grit/browser_resources.h" type="rc_header">
       <emit emit_type='prepend'></emit>
     </output>
     <output filename="browser_resources.pak" type="data_package" />
     <output filename="browser_resources.rc" type="rc_all" />
   </outputs>
   <release seq="1">
@@ skipping 33 matching lines @@
       <if expr="not pp_ifdef('android')">
         <structure name="IDR_NEW_TAB_4_HTML" file="resources\ntp4\new_tab.html" flattenhtml="true" type="chrome_html" />
         <structure name="IDR_NEW_TAB_4_THEME_CSS" file="resources\ntp4\new_tab_theme.css" flattenhtml="true" type="chrome_html" />
       </if>
       <if expr="pp_ifdef('android')">
         <structure name="IDR_NEW_TAB_ANDROID_HTML" file="resources\ntp_android\new_tab.html" flattenhtml="true" type="chrome_html" />
       </if>
       <if expr="pp_ifdef('chromeos')">
         <structure name="IDR_OOBE_HTML" file="resources\chromeos\login\oobe.html" flattenhtml="true" type="chrome_html" />
         <structure name="IDR_OOBE_JS" file="resources\chromeos\login\oobe.js" flattenhtml="true" type="chrome_html" />
+        <structure name="IDR_OOBE_COMMON_JS" file="resources\chromeos\login\oobe_common.js" flattenhtml="true" type="chrome_html" />

[dzhioev (left Google), 2013/04/16 10:47:48]

Do we need this declaration here? I thought preprocessor can handle included
file automatically. For example all the screen_*.{html,js,css} not declared
here.

[dconnelly, 2013/04/16 11:11:22]

Cool. I didn't know it did that, but it makes sense.

       </if>
       <structure name="IDR_READER_OUT_OF_DATE_HTML" file="resources\reader_out_of_date.html" flattenhtml="true" type="chrome_html" />
       <structure name="IDR_SSL_ROAD_BLOCK_HTML" file="resources\ssl_roadblock.html" flattenhtml="true" type="chrome_html" />
       <structure name="IDR_SAFE_BROWSING_MALWARE_BLOCK_V2" file="resources\safe_browsing\malware_block_v2.html" flattenhtml="true" type="chrome_html" />
       <structure name="IDR_MANAGED_USER_PASSPHRASE_DIALOG_HTML" file="resources\managed_user_passphrase_dialog.html" flattenhtml="true" type="chrome_html" />
     </structures>
     <includes>
       <if expr="is_win">
         <include name="IDR_ABOUT_CONFLICTS_HTML" file="resources\about_conflicts.html" flattenhtml="true" allowexternalscript="true" type="BINDATA" />
         <include name="IDR_ABOUT_CONFLICTS_JS" file="resources\about_conflicts.js" type="BINDATA" />
@@ skipping 266 matching lines @@
         <include name="IDR_SET_AS_DEFAULT_BROWSER_HTML" file="resources\set_as_default_browser.html" flattenhtml="true" allowexternalscript="true" type="BINDATA" />
       </if>
       <include name="IDR_MANAGED_MODE_BLOCK_INTERSTITIAL_HTML" file="resources\managed_mode_block_interstitial.html" flattenhtml="true" type="BINDATA" />
       <include name="IDR_MANAGED_USER_PASSPHRASE_DIALOG_JS" file="resources\managed_user_passphrase_dialog.js" type="BINDATA" />
       <include name="IDR_PROFILE_SIGNIN_CONFIRMATION_HTML" file="resources\profile_signin_confirmation.html" type="BINDATA" />
       <include name="IDR_PROFILE_SIGNIN_CONFIRMATION_JS" file="resources\profile_signin_confirmation.js" type="BINDATA" />
       <include name="IDR_PROFILE_SIGNIN_CONFIRMATION_CSS" file="resources\profile_signin_confirmation.css" type="BINDATA" />
     </includes>
   </release>
 </grit>