Added function to provide the short board name of the device

base/sys_info.h

Index: base/sys_info.h
diff --git a/base/sys_info.h b/base/sys_info.h
index b10747703d230fab880732bd23ba08e6661c61f8..aea7071e741de0c85a8006ab35be1c1d1af84d44 100644
--- a/base/sys_info.h
+++ b/base/sys_info.h
@@ -107,9 +107,19 @@ class BASE_EXPORT SysInfo {
   static bool GetLsbReleaseValue(const std::string& key, std::string* value);
 
   // Convenience function for GetLsbReleaseValue("CHROMEOS_RELEASE_BOARD",...).
-  // Returns "unknown" if CHROMEOS_RELEASE_BOARD is not set.
+  // Returns "unknown" if CHROMEOS_RELEASE_BOARD is not set. Otherwise returns
+  // the full name of the board. WARNING: the returned value often differs in
+  // locally built system compared to chromebooks that use the official version.

[Thiemo Nagel, 2016/11/23 20:21:19]

Nit: "locally built" --> developer built
Nit: "chromebook" --> device (there's also Chromebox, Chromebit, AIO, ...)

[igorcov, 2016/11/25 11:08:59]

Done.

+  // E.g. for locally built version, the function could return 'glimmer' while
+  // for officially used versions it would be like 'glimmer-signed-mp-v4keys'.
+  // Use GetStrippedReleaseBoard() function if you need only the short name of
+  // the board (would be 'glimmer' in the case described above).
   static std::string GetLsbReleaseBoard();
 
+  // Convenience function for GetLsbReleaseBoard() removing "-signed.." if

[Thiemo Nagel, 2016/11/23 20:21:19]

Nit: removing "-signed.." --> removing trailing "-signed-*"
(use either star or 3 dots, though I think the star would be more readily
understood)

[igorcov, 2016/11/25 11:08:59]

Done.

+  // present. Returns "unknown" if CHROMEOS_RELEASE_BOARD is not set.
+  static std::string GetStrippedReleaseBoard();
+
   // Returns the creation time of /etc/lsb-release. (Used to get the date and
   // time of the Chrome OS build).
   static Time GetLsbReleaseTime();