Linux: Use FreeDesktop standard in .desktop entries

chrome/installer/linux/common/desktop.template

 [Desktop Entry]
 Version=1.0
 Name=@@MENUNAME@@
 # Only KDE 4 seems to use GenericName, so we reuse the KDE strings.
 # From Ubuntu's language-pack-kde-XX-base packages, version 9.04-20090413.
 GenericName=Web Browser
 GenericName[ar]=متصفح الشبكة
 GenericName[bg]=Уеб браузър
 GenericName[ca]=Navegador web
 GenericName[cs]=WWW prohlížeč
@@ skipping 93 matching lines @@
 Comment[vi]=Truy cập Internet
 Comment[zh_CN]=访问互联网
 Comment[zh_HK]=連線到網際網路
 Comment[zh_TW]=連線到網際網路
 Exec=/usr/bin/@@USR_BIN_SYMLINK_NAME@@ %U
 Terminal=false
 Icon=@@PACKAGE@@
 Type=Application
 Categories=Network;WebBrowser;
 MimeType=text/html;text/xml;application/xhtml_xml;image/webp;x-scheme-handler/http;x-scheme-handler/https;x-scheme-handler/ftp;
-X-Ayatana-Desktop-Shortcuts=NewWindow;NewIncognito
+Actions=NewWindow;NewPrivateWindow;
 
-[NewWindow Shortcut Group]
+[Desktop Action NewWindow]
 Name=New Window
 Name[am]=አዲስ መስኮት
 Name[ar]=نافذة جديدة
 Name[bg]=Нов прозорец
 Name[bn]=নতুন উইন্ডো
 Name[ca]=Finestra nova
 Name[cs]=Nové okno
 Name[da]=Nyt vindue
 Name[de]=Neues Fenster
 Name[el]=Νέο Παράθυρο
@@ skipping 32 matching lines @@
 Name[sw]=Dirisha Jipya
 Name[ta]=புதிய சாளரம்
 Name[te]=క్రొత్త విండో
 Name[th]=หน้าต่างใหม่
 Name[tr]=Yeni Pencere
 Name[uk]=Нове вікно
 Name[vi]=Cửa sổ Mới
 Name[zh_CN]=新建窗口
 Name[zh_TW]=開新視窗
 Exec=/usr/bin/@@USR_BIN_SYMLINK_NAME@@
-TargetEnvironment=Unity
+OnlyShowIn=Unity;
 
-[NewIncognito Shortcut Group]
+[Desktop Action NewPrivateWindow]
 Name=New Incognito Window
 Name[ar]=نافذة جديدة للتصفح المتخفي
 Name[bg]=Нов прозорец „инкогнито“
 Name[bn]=নতুন ছদ্মবেশী উইন্ডো
 Name[ca]=Finestra d'incògnit nova
 Name[cs]=Nové anonymní okno
 Name[da]=Nyt inkognitovindue
 Name[de]=Neues Inkognito-Fenster
 Name[el]=Νέο παράθυρο για ανώνυμη περιήγηση
 Name[en_GB]=New Incognito window
@@ skipping 30 matching lines @@
 Name[sv]=Nytt inkognitofönster
 Name[ta]=புதிய மறைநிலைச் சாளரம்
 Name[te]=క్రొత్త అజ్ఞాత విండో
 Name[th]=หน้าต่างใหม่ที่ไม่ระบุตัวตน
 Name[tr]=Yeni Gizli pencere
 Name[uk]=Нове вікно в режимі анонімного перегляду
 Name[vi]=Cửa sổ ẩn danh mới
 Name[zh_CN]=新建隐身窗口
 Name[zh_TW]=新增無痕式視窗
 Exec=/usr/bin/@@USR_BIN_SYMLINK_NAME@@ --incognito
-TargetEnvironment=Unity
+OnlyShowIn=Unity;

[Tom (Use chromium acct), 2016/10/14 00:00:01]

Do you know why TargetEnvironment=Unity was originally added?
Can we just remove this?

Also, desktop-file-validate gives warnings for this:
chrome/installer/linux/common/desktop.template: warning: key "OnlyShowIn" in
group "Desktop Action NewWindow" is deprecated
chrome/installer/linux/common/desktop.template: warning: key "OnlyShowIn" in
group "Desktop Action NewPrivateWindow" is deprecated

There were errors before when using TargetEnvironment=Unity

[Lei Zhang, 2016/10/14 01:23:44]

Nope. As I said, the lost some history with the transition into an internal repo
and then back out.
I'd say yes. See the discussion linked from
https://bugs.freedesktop.org/show_bug.cgi?id=66712

[Tom (Use chromium acct), 2016/10/14 01:51:26]

Done.