downloads: break downloads.js into more classes/files.

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" />
   </outputs>
   <release seq="1">
     <structures>
@@ skipping 111 matching lines @@
       <include name="IDR_CRASHES_JS" file="resources\crashes.js" type="BINDATA" />
       <include name="IDR_CREDITS_HTML" file="${about_credits_file}" use_base_dir="false" type="BINDATA" />
       <include name="IDR_CREDITS_JS" file="resources\about_credits.js" type="BINDATA" />
       <if expr="not is_ios">
         <include name="IDR_DEVTOOLS_DISCOVERY_PAGE_HTML" file="devtools\frontend\devtools_discovery_page.html" type="BINDATA"/>
       </if>
       <include name="IDR_DOMAIN_RELIABILITY_INTERNALS_HTML" file="resources\domain_reliability_internals.html" type="BINDATA" />
       <include name="IDR_DOMAIN_RELIABILITY_INTERNALS_CSS" file="resources\domain_reliability_internals.css" type="BINDATA" />
       <include name="IDR_DOMAIN_RELIABILITY_INTERNALS_JS" file="resources\domain_reliability_internals.js" type="BINDATA" />
       <if expr="not is_android">
-        <include name="IDR_DOWNLOADS_JS" file="resources\downloads\downloads.js" type="BINDATA" />
+        <include name="IDR_DOWNLOAD_ITEM_JS" file="resources\downloads\item.js" type="BINDATA" />
+        <include name="IDR_DOWNLOAD_ITEM_VIEW_JS" file="resources\downloads\item_view.js" type="BINDATA" />
+        <include name="IDR_DOWNLOAD_FOCUS_ROW_JS" file="resources\downloads\focus_row.js" type="BINDATA" />

[Lei Zhang, 2015/03/11 23:01:38]

Alphabetical order? What about externs.js?

[Dan Beam, 2015/03/11 23:38:34]

whoops.  Done.  (they were in dependency order... but that's not particularly
helpful.)

externs.js isn't necessary (it's just for compiler)

+        <include name="IDR_DOWNLOAD_MANAGER_JS" file="resources\downloads\manager.js" type="BINDATA" />
       </if>
       <if expr="enable_extensions">
         <include name="IDR_EXTENSION_COMMAND_LIST_JS" file="resources\extensions\extension_command_list.js" flattenhtml="true" type="BINDATA" />
         <include name="IDR_EXTENSION_LIST_JS" file="resources\extensions\extension_list.js" flattenhtml="true" type="BINDATA" />
         <include name="IDR_EXTENSIONS_JS" file="resources\extensions\extensions.js" flattenhtml="true" type="BINDATA" />
       </if>
       <include name="IDR_FEEDBACK_MANIFEST" file="resources\feedback\manifest.json" type="BINDATA" />
       <include name="IDR_FLAGS_HTML" file="resources\flags.html" flattenhtml="true" type="BINDATA" />
       <include name="IDR_FLAGS_JS" file="resources\flags.js" type="BINDATA" />
       <if expr="is_android">
@@ skipping 291 matching lines @@
         </if>
         <include name="IDR_HANGUL_MANIFEST" file="resources\chromeos\input_method\hangul_manifest.json" type="BINDATA" />
         <include name="IDR_BRAILLE_MANIFEST" file="resources\chromeos\braille_ime\manifest.json" type="BINDATA" />
       </if>
       <include name="IDR_WHISPERNET_PROXY_MANIFEST" file="resources\whispernet_proxy\manifest.json" type="BINDATA" />
       <include name="IDR_MD_SETTINGS_UI_HTML" file="resources\md_settings\md_settings.html" type="BINDATA" />
       <include name="IDR_MD_SETTINGS_UI_CSS" file="resources\md_settings\md_settings.css" type="BINDATA" />
     </includes>
   </release>
 </grit>