Add DEPS roll support to got_XXX_revision.

scripts/slave/chromium_commands.py

Index: scripts/slave/chromium_commands.py
diff --git a/scripts/slave/chromium_commands.py b/scripts/slave/chromium_commands.py
index 26ee71ad6f36dc0e65c4cec05428ffe7f14c2e2b..a6dc0aae4ef171526c8d99b29b81376ae81f51ef 100644
--- a/scripts/slave/chromium_commands.py
+++ b/scripts/slave/chromium_commands.py
@@ -632,6 +632,7 @@ class ApplyIssue(Command):
     self.workdir = None
     self.timeout = None
     self.server = None
+    self.command = None
     chromium_utils.GetParentClass(ApplyIssue).__init__(self, *args, **kwargs)
 
   def _doApplyIssue(self, _):
@@ -649,10 +650,10 @@ class ApplyIssue(Command):
     if self.server:
       cmd.extend(['-s', self.server])
 
-    command = runprocess.RunProcess(
+    self.command = runprocess.RunProcess(
         self.builder, cmd, os.path.join(self.builder.basedir, self.workdir),
-        timeout=self.timeout)
-    return command.start()
+        timeout=self.timeout, keepStdout=True)
+    return self.command.start()
 
   # Command overrides:
 
@@ -670,8 +671,12 @@ class ApplyIssue(Command):
     log.msg('ApplyIssue.start')
     d = defer.succeed(None)
     d.addCallback(self._doApplyIssue)
+    d.addCallback(self._parseGotRevision)
     return d
 
+  def _parseGotRevision(self, command):
+    return self.sendStatus(extract_revisions(self.command.stdout))
+
 
 def RegisterCommands():
   """Registers all command objects defined in this file."""