Commit Queue: add Build-Debian9-GCC-arm-Chromecast

Motivation:  This compiler configuration has a few quirks.
Change-Id: I9c50a15510f4b770f8643b21e9e7cdf57264bc50
Reviewed-on: https://skia-review.googlesource.com/24324
Reviewed-by: Eric Boren <borenet@google.com>
Commit-Queue: Hal Canary <halcanary@google.com>
diff --git a/infra/branch-config/cq.cfg b/infra/branch-config/cq.cfg
index a4b3929..a2bf8d2 100644
--- a/infra/branch-config/cq.cfg
+++ b/infra/branch-config/cq.cfg
@@ -32,13 +32,14 @@
     }
     buckets {
       name: "skia.primary"
-      builders { name: "Build-Mac-Clang-x86_64-Release" }
       builders { name: "Build-Debian9-Clang-arm-Debug-Android" }
       builders { name: "Build-Debian9-Clang-arm64-Debug-Android" }
       builders { name: "Build-Debian9-Clang-mips64el-Debug-Android" }
       builders { name: "Build-Debian9-Clang-x86_64-Debug" }
+      builders { name: "Build-Debian9-GCC-arm-Debug-Chromecast" }
       builders { name: "Build-Debian9-GCC-x86_64-Debug-NoGPU" }
       builders { name: "Build-Debian9-GCC-x86_64-Release" }
+      builders { name: "Build-Mac-Clang-x86_64-Release" }
       builders { name: "Build-Win-MSVC-x86-Debug" }
       builders { name: "Build-Win-MSVC-x86_64-Release-Vulkan" }
       builders { name: "Housekeeper-PerCommit-InfraTests" }