Switch the default `git try` / `gcl try` bots to _rel.

That matches the CQ bots, and they're significantly faster.

The global trybots are added to all subdirectory PRESUBMITs automatically, so remove win, linux, mac from subdirectory PRESUBMITs (instead of changing them too).

BUG=99521
TEST=`git try` creates faster tryjobs.
TBR=willchan (net), akalin (sync)

Review URL: http://codereview.chromium.org/8162009

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@113979 0039d316-1c4b-4281-b951-d872f2087c98

PRESUBMIT.py

@@ -317,8 +317,8 @@ def CheckChangeOnCommit(input_api, output_api):
       output_api,
       json_url='http://chromium-status.appspot.com/current?format=json'))
   results.extend(input_api.canned_checks.CheckRietveldTryJobExecution(input_api,
-      output_api, 'http://codereview.chromium.org', ('win', 'linux', 'mac'),
-      'tryserver@chromium.org'))
+      output_api, 'http://codereview.chromium.org',
+      ('win_rel', 'linux_rel', 'mac_rel'), 'tryserver@chromium.org'))
 
   results.extend(input_api.canned_checks.CheckChangeHasBugField(
       input_api, output_api))
@@ -334,5 +334,5 @@ def GetPreferredTrySlaves(project, change):
   only_objc_files = all(
       f.LocalPath().endswith(('.mm', '.m')) for f in change.AffectedFiles())
   if only_objc_files:
-    return ['mac']
-  return ['win', 'linux', 'mac']
+    return ['mac_rel']
+  return ['win_rel', 'linux_rel', 'mac_rel']

base/PRESUBMIT.py

@@ -9,4 +9,4 @@ for more details on the presubmit API built into gcl.
 """
 
 def GetPreferredTrySlaves():
-  return ['win', 'linux', 'mac', 'win_sync', 'linux_sync', 'mac_sync']
+  return ['win_sync', 'linux_sync', 'mac_sync']

chrome/browser/sync/PRESUBMIT.py

@@ -9,4 +9,4 @@ for more details on the presubmit API built into gcl.
 """
 
 def GetPreferredTrySlaves():
-  return ['win', 'linux', 'mac', 'win_sync', 'linux_sync', 'mac_sync']
+  return ['win_sync', 'linux_sync', 'mac_sync']

chrome/common/net/PRESUBMIT.py

@@ -9,4 +9,4 @@ for more details on the presubmit API built into gcl.
 """
 
 def GetPreferredTrySlaves():
-  return ['win', 'linux', 'mac', 'win_sync', 'linux_sync', 'mac_sync']
+  return ['win_sync', 'linux_sync', 'mac_sync']

jingle/PRESUBMIT.py

@@ -9,4 +9,4 @@ for more details on the presubmit API built into gcl.
 """
 
 def GetPreferredTrySlaves():
-  return ['win', 'linux', 'mac', 'win_sync', 'linux_sync', 'mac_sync']
+  return ['win_sync', 'linux_sync', 'mac_sync']

net/PRESUBMIT.py

@@ -9,7 +9,7 @@ for more details on the presubmit API built into gcl.
 """
 
 def GetPreferredTrySlaves(project, change):
-  slaves = ['win', 'linux', 'mac', 'win_sync', 'linux_sync', 'mac_sync']
+  slaves = ['win_sync', 'linux_sync', 'mac_sync']
   # Changes that touch NSS files will likely need a corresponding OpenSSL edit.
   # Conveniently, this one glob also matches _openssl.* changes too.
   if any('nss' in f.LocalPath() for f in change.AffectedFiles()):