Add/rename chromium_perf gclient configs.

recipe_modules/gclient/config.py

Index: recipe_modules/gclient/config.py
diff --git a/recipe_modules/gclient/config.py b/recipe_modules/gclient/config.py
index bcd698dbb50ad83ce32e3d09fc07e6aff3414f44..36109ef2adca167be82e9c6a3fb41de0b21ed00a 100644
--- a/recipe_modules/gclient/config.py
+++ b/recipe_modules/gclient/config.py
@@ -470,6 +470,14 @@ def perf(c):
     del c.solutions[1].custom_deps[key]
   c.solutions[1].managed = False
 
+@config_ctx(includes=['chromium', 'chrome_internal'])
+def chromium_perf(c):
+  pass
+
+@config_ctx(includes=['chromium_perf', 'android'])
+def chromium_perf_android(c):
+  pass
+
 @config_ctx(includes=['chromium'])
 def chromium_skia(c):
   c.solutions[0].revision = 'HEAD'