Replace kChromeOSReleaseBoard with SysInfo::GetLsbReleaseBoard()

BUG=126732

Review URL: https://codereview.chromium.org/32043003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@231396 0039d316-1c4b-4281-b951-d872f2087c98
Added crash_service as a dependency of chromium_gpu_{debug_}builder target.

BUG=311826
R=zmo@chromium.org

Review URL: https://codereview.chromium.org/46063004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@231397 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 231397