Drop Precise blink builders on chromium.webkit, add corresponding Trusty builders.

scripts/slave/recipes/chromium.py

 # Copyright 2013 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.
 
 DEPS = [
   'adb',
   'bisect_tester',
   'depot_tools/bot_update',
   'chromium',
   'chromium_android',
@@ skipping 1473 matching lines @@
     api.override_step_data('test_script_with_broken_tests',
                            api.json.output({
       'valid': True,
       'failures': ['FailSuite.Test1', 'FlakySuite.TestA']
     }))
   )
 
   yield (
     api.test('chromium_webkit_crash') +
     api.properties.generic(mastername='chromium.webkit',
-                           buildername='WebKit Linux Precise') +
+                           buildername='WebKit Linux Trusty') +
     api.platform('linux', 64) +
     api.override_step_data(
         'webkit_tests',
         api.test_utils.raw_test_output(None, retcode=1))
   )
 
   yield (
     api.test('chromium_webkit_warnings') +
     api.properties.generic(mastername='chromium.webkit',
-                           buildername='WebKit Linux Precise') +
+                           buildername='WebKit Linux Trusty') +
     api.platform('linux', 64) +
     api.override_step_data(
         'webkit_tests',
         api.test_utils.canned_test_output(
             passing=True, unexpected_flakes=True, retcode=0))
   )
 
   yield (
     api.test('chromium_webkit_revision_webkit') +
     api.properties.generic(mastername='chromium.webkit',
-                           buildername='WebKit Linux Precise',
+                           buildername='WebKit Linux Trusty',
                            project='webkit',
                            revision='191187') +
     api.platform('linux', 64)
   )
 
   yield (
     api.test('chromium_webkit_revision_chromium') +
     api.properties.generic(
         mastername='chromium.webkit',
-        buildername='WebKit Linux Precise',
+        buildername='WebKit Linux Trusty',
         project='chromium',
         revision='3edb4989f8f69c968c0df14cb1c26d21dd19bf1f') +
     api.platform('linux', 64)
   )
 
   yield (
     api.test('chromium_webkit_parent_revision_webkit') +
     api.properties.generic(
         mastername='chromium.webkit',
         buildername='WebKit Win7',
@@ skipping 31 matching lines @@
   yield (
     api.test('ensure_goma_fail') +
     api.properties(
         mastername='chromium.fyi',
         buildername='Linux remote_run Builder',
         slavename='build1-a1',
         buildnumber='77457',
         path_config='kitchen') +
     api.override_step_data('ensure_goma.ensure_installed', retcode=1)
   )