Add Nexus5 to CQ as an experiment

infra/branch-config/cq.cfg

Index: infra/branch-config/cq.cfg
diff --git a/infra/branch-config/cq.cfg b/infra/branch-config/cq.cfg
index 00a5745763bbe13fe48afb2649b3a5a05ff99616..8cc42e073135a245788a28f7252e8b05a623848c 100644
--- a/infra/branch-config/cq.cfg
+++ b/infra/branch-config/cq.cfg
@@ -52,6 +52,13 @@ verifiers {
       builders { name: "skia_presubmit-Trybot" }
     }
     buckets {
+      name: "master.client.skia.android"
+      builders {
+        name: "Test-Android-GCC-Nexus5-GPU-Adreno330-Arm7-Release-Trybot"
+        experiment_percentage: 100
+      }
+    }
+    buckets {
       name: "master.tryserver.chromium.mac"
       # At time of writing, this is the fastest Chrome compile bot on average.
       builders { name: "mac_chromium_compile_dbg_ng" }