Rework how bots get the version of Blink.

masters/master.devtools/master.cfg

Index: masters/master.devtools/master.cfg
diff --git a/masters/master.devtools/master.cfg b/masters/master.devtools/master.cfg
index 2db9c0bcf10c705f0bd7eddf4ca293a5ee94c837..f4cd6005c3a819578ac57a855a0cc95e8f0a57ea 100644
--- a/masters/master.devtools/master.cfg
+++ b/masters/master.devtools/master.cfg
@@ -53,7 +53,7 @@ c['change_source'] = [cr_poller, webkit_poller]
 
 def linux(): return chromium_factory.ChromiumFactory('src/build', 'linux2')
 
-factory_release = linux().ChromiumWebkitLatestFactory(
+factory_release = linux().ChromiumFactory(
     target='Release',
     tests=['devtools_perf'],
     options=['--build-tool=ninja',
@@ -68,8 +68,8 @@ factory_release = linux().ChromiumWebkitLatestFactory(
       'gclient_env': {
           'GYP_DEFINES':'release_extra_cflags="-fno-omit-frame-pointer"'
       }
-    }
-  )
+      'blink_config': 'blink',
+    })
 
 builder_release = {
   'name': 'x64 Release',
@@ -80,7 +80,7 @@ builder_release = {
 }
 
 
-factory_debug = linux().ChromiumWebkitLatestFactory(
+factory_debug = linux().ChromiumFactory(
     target='Debug',
     tests=['devtools_perf'],
     options=['--build-tool=ninja',
@@ -92,8 +92,8 @@ factory_debug = linux().ChromiumWebkitLatestFactory(
     factory_properties={
       'perf_id': 'chromium-devtools-perf-debug',
       'show_perf_results': True,
-    }
-  )
+      'blink_config': 'blink',
+    })
 
 builder_debug = {
   'name': 'x64 Debug',
@@ -103,7 +103,7 @@ builder_debug = {
   'auto_reboot': False
 }
 
-factory_release_clang = linux().ChromiumWebkitLatestFactory(
+factory_release_clang = linux().ChromiumFactory(
     target='Release',
     tests=['devtools_perf'],
     options=['--build-tool=ninja',
@@ -117,9 +117,9 @@ factory_release_clang = linux().ChromiumWebkitLatestFactory(
       'show_perf_results': True,
       'gclient_env': {
           'GYP_DEFINES':'clang=1 clang_use_chrome_plugins=1'
-      }
-    }
-  )
+      },
+      'blink_config': 'blink',
+    })
 
 builder_release_clang = {
   'name': 'x64 Release Clang',