A testfilter with 'compile' will trigger to build everything.

scripts/master/factory/commands.py

 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """Set of utilities to add commands to a buildbot factory (BuildFactory).
 
 All the utility functions to add steps to a build factory here are not
 project-specific. See the other *_commands.py for project-specific commands.
 """
 
@@ skipping 117 matching lines @@
 class CompileWithRequiredSwarmTargets(shell.Compile):
   def start(self):
     try:
       test_filters = self.getProperty('testfilter')
     except KeyError:
       test_filters = []
 
     command = self.command
     swarm_tests = GetSwarmTestsFromTestFilter(test_filters)
     command.extend(swarm_test + '_run' for swarm_test in swarm_tests)
+    if 'compile' in test_filters:
+      command.append('all')
 
     self.setCommand(command)
     return shell.Compile.start(self)
 
 
 class FactoryCommands(object):
   # Base URL for performance test results.
   PERF_BASE_URL = config.Master.perf_base_url
   PERF_REPORT_URL_SUFFIX = config.Master.perf_report_url_suffix
 
@@ skipping 948 matching lines @@
 
   def commandComplete(self, cmd):
     out = cmd.logs['stdio'].getText()
     build_properties = re.findall('BUILD_PROPERTY ([^=]*)=(.*)', out)
     for propname, value in build_properties:
       # findall can return strings containing CR characters, remove with strip.
       self.build.setProperty(propname, value.strip(), 'Step')
 
   def getText(self, cmd, results):
     return self.describe(True) + self.messages