Add mb config for chromium.chromedriver.

tools/mb/mb_config.pyl

Index: tools/mb/mb_config.pyl
diff --git a/tools/mb/mb_config.pyl b/tools/mb/mb_config.pyl
index 628f64337322d94691a050f44b4054583bf85563..0c49c0acd952b58238f9c9615e38655ec3efb768 100644
--- a/tools/mb/mb_config.pyl
+++ b/tools/mb/mb_config.pyl
@@ -69,6 +69,13 @@
       'Google Chrome Win': 'gn_official_goma_minimal_symbols_x86',
     },
 
+    'chromium.chromedriver': {
+      'Win7': 'gn_goma_release_static_x86',
+      'Mac 10.6': 'gn_goma_release_static',
+      'Linux': 'gn_goma_release_static',
+      'Linux32': 'gn_goma_release_static_x86',
+    },
+
     'chromium.chromiumos': {
       'ChromiumOS amd64-generic Compile': 'cros_chrome_sdk_gn',
       'ChromiumOS daisy Compile': 'cros_chrome_sdk_gn',
@@ -1134,6 +1141,14 @@
       'gn', 'debug_static_bot', 'chrome_with_codecs',
     ],
 
+    'gn_goma_release_static': [

[jbudorick, 2016/07/22 00:47:31]

I think these are equivalent to gn_release_bot and gn_release_bot_x86.

[samuong, 2016/07/22 02:08:46]

Done.

+      'gn', 'goma', 'release', 'static'
+    ],
+
+    'gn_goma_release_static_x86': [
+      'gn', 'goma', 'release', 'static', 'x86'
+    ],
+
     'gn_linux_upload': [
       'gn_linux_upload', 'official', 'goma',
     ],