Revert of Rename existing Blink try bots to include OS version.

masters/master.tryserver.blink/slaves.cfg

Index: masters/master.tryserver.blink/slaves.cfg
diff --git a/masters/master.tryserver.blink/slaves.cfg b/masters/master.tryserver.blink/slaves.cfg
index 627a917163f6e4c5269449c9c8ea7b2e107e8e44..5be6f0f3dc25f58027254cae46b2402ecaef15d0 100644
--- a/masters/master.tryserver.blink/slaves.cfg
+++ b/masters/master.tryserver.blink/slaves.cfg
@@ -15,10 +15,10 @@
     'version': 'precise',
     'bits': '64',
     'builder': [
-      'linux_precise_blink_compile_dbg',
-      'linux_precise_blink_compile_rel',
-      'linux_precise_blink_dbg',
-      'linux_precise_blink_rel',
+      'linux_blink_compile_dbg',
+      'linux_blink_compile_rel',
+      'linux_blink_dbg',
+      'linux_blink_rel',
     ],
     'hostname': 'slave%d-c4' % slave,
   })
@@ -30,10 +30,10 @@
     'version': '10.9',
     'bits': '64',
     'builder': [
-      'mac10.9_blink_compile_dbg',
-      'mac10.9_blink_compile_rel',
-      'mac10.9_blink_dbg',
-      'mac10.9_blink_rel',
+      'mac_blink_compile_dbg',
+      'mac_blink_compile_rel',
+      'mac_blink_dbg',
+      'mac_blink_rel',
     ],
     'hostname': 'vm%d-m4' % slave,
   })
@@ -45,10 +45,10 @@
     'version': 'win7',
     'bits': '64',
     'builder': [
-      'win7_blink_compile_dbg',
-      'win7_blink_compile_rel',
-      'win7_blink_dbg',
-      'win7_blink_rel',
+      'win_blink_compile_dbg',
+      'win_blink_compile_rel',
+      'win_blink_dbg',
+      'win_blink_rel',
     ],
     'hostname': 'vm%d-m4' % slave,
   })