Add VisualBench switch to extra_config

tools/buildbot_spec.py

Index: tools/buildbot_spec.py
diff --git a/tools/buildbot_spec.py b/tools/buildbot_spec.py
index b62fe61fc54c2d394b72b8740ee1be2f0f9ef733..8049b618719e2d143751c96cebaffacf2a5b307b 100755
--- a/tools/buildbot_spec.py
+++ b/tools/buildbot_spec.py
@@ -143,6 +143,10 @@ def gyp_defines(builder_dict):
       builder_dict.get('cpu_or_gpu_value') == 'Mesa'):
     gyp_defs['skia_mesa'] = '1'
 
+  # VisualBench
+  if builder_dict.get('extra_config') == 'VisualBench':
+    gyp_defs['skia_use_sdl'] = '1'
+
   # skia_use_android_framework_defines.
   if builder_dict.get('extra_config') == 'Android_FrameworkDefs':
     gyp_defs['skia_use_android_framework_defines'] = '1'
@@ -185,8 +189,10 @@ def build_targets_from_builder_dict(builder_dict, do_test_steps, do_perf_steps):
   t = []
   if do_test_steps:
     t.append('dm')
-  if do_perf_steps:
-    t.append('nanobench')
+  if do_perf_steps and builder_dict.get('extra_config') == 'VisualBench':
+      t.append('visualbench')
+  elif do_perf_steps:
+      t.append('nanobench')
   if t:
     return t
   else:
@@ -319,6 +325,7 @@ def self_test():
         'Build-Ubuntu-GCC-x86_64-Release-ANGLE',
         'Housekeeper-PerCommit',
         'Perf-Win8-MSVC-ShuttleB-GPU-HD4600-x86_64-Release-Trybot',
+        'Perf-Ubuntu-GCC-ShuttleA-GPU-GTX660-x86_64-Release-VisualBench',
         'Test-Android-GCC-GalaxyS4-GPU-SGX544-Arm7-Debug',
         'Perf-Android-GCC-Nexus5-GPU-Adreno330-Arm7-Release-Appurify',
         'Test-Android-GCC-Nexus6-GPU-Adreno420-Arm7-Debug',